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      Bosch cis fuel pressure chart. I am measuring near the entry to the DWUR.



      • Bosch cis fuel pressure chart CONTROL PRESSURE REGULATOR The control pressure regulator (or warm-up regulator) controls fuel pressure to the top of the plunger in the fuel distributor TYPICAL FUEL INJECTOR PRESSURE TEST (For Bosch CIS and GM TBI, see additional instructions) :LWK HQJLQH RII ORFDWH IXHO SUHVVXUH SRUW DQG VLPSO\ FRQQHFW WKH SURSHU DGDSWHU WR WKH Apr 12, 2008 · The warm up regulator takes as input the fuel output line on top of the fuel distributor, which, by itself is system pressure (5. com/Tips on how to adjust the fuel mixture on air-cooled Porsche 911s running Bosch CIS K-Jetronic Fuel Inje 1 injector cracks (open) at 4 bar (58psi) and flows at 75 (21% more fuel) I have attached the test results. 5 911T CIS. 5 bar - the blip of the throttle when cold takes the pressure down to 40 psi and it slowly increases to 50 psi again. Charles Probst, in the bible for CIS "Bosch Fuel Injection and Engine Management," Bentley 1989, says the system pressure regulator shims (washers) are 0. Apr 26, 2016 · If the pressure is too low, test the fuel pump volume. Jan 13, 2008 · The question is that when reconnecting the WUR pressure would start at about 0. com/Step by step process on how to perform the fuel pressure tests on air-cooled Porsche 911s running Bosch Repairing the CIS Jetronic Alloy adjustable Bosch Fuel distributor In General: Mercedes-Benz and Bosch doesn't support the repair of fuel distributors. Then this pressure is called the "control pressure" (3. It was fairly prevalent back in the ’70s and ’80s on cars from VW, BMW, Audi, Porsche, Mercedes-Benz, Volvo, Saab and even Ferrari. You'll see the little washer under the spring on the Jun 21, 2021 · Pressure test: Connect the CIS pressure gauge to the main fuel line delivery coming from the FP. I find Group II to be more common or abundant in my testing. For most 1976 to 1993 Mercedes fuel injectio There are several checks you can make of CIS components that support the warmed up mode of running without ever starting the engine. 0-11o. Build an ACCURATE tester and save $$. mercedessource Product - This is a do-it-yourself option. In most cases, this should be about 1 bar. Warm control pressure too low (seeWarm-upRegulator) 0- Incorrect system pressure (seeSystem Pressure) Fuel system pressure leakage (seeFuel Leaks) 10. and V/8 engines. I had Rubber Specialties braze the fitting into my fuel supply hard line, so I didn't even have to worry about finding the metric Sep 21, 2024 · KE-Jet system pressure should be 6. Bosch CIS Training Series 3: How to Do Preliminary Fuel Flow and FD Leak Tests. Fuel Pump Delivery Rate - (750 cc/min through '77, 1000cc/min through '83). Injector to suit Holden Captiva CRD 2. Be sure to remove all fuel lines prior to shipment. You need metric fittings to connect between the fuel distributor and the WUR. injectors, high pressure pumps and rail assemblies) there can be two Bosch part numbers for the same component, depending on whether it was manufactured and supplied by Bosch direct to the vehicle manufacturer (OEM) or supplied to the Bosch aftermarket network. It does function, meaning it warms up and control pressure changes, but since I don't know what the pressure over time chart should be, I have no idea if its in spec. Nov 6, 2010 · Fig. In this 22-minute training video I have a 1980 3. I demonstrate how to test the fuel pressure in our 1988 VW Cabriolet. This test is to show fuel pressure from fuel distributer right? To test control pressure I open the valve, and start the engine. Please tell me what you think. To increase fuel flow you must increase the fuel pressure on the K-Jetronic. Feb 11, 2022 · Close the valve that is part of the fuel pressure gauge between the WUR and the fuel distributor. 9 bar - 5. Always wear safety glasses. The dual scale 2-1/2" (65mm) gauge with hook has a 100 PSI/7 bar. 36, is a mechanically and continuously operating fuel injection system which does not have to be driven by the vehicle engine. sort of like a carby does. Nov 22, 2019 · The later larger Bosch CIS fuel pump with the replaceable check valve (that would be more functionally equivalent to your stock fuel pump) is Bosch 0580254947 = Bosch USA 69532. The "control pressure" is the lower chamber pressure, this is controlled by the EHG (electrohydraulic actuator). The Best Book: Jul 22, 2008 · The fuel pump/accumulator package weighs about 5lb. Then if this is in spec, check the counter pressure. 5 to 1983 on the 911, and to 1994 on the Turbo Porsche models. /Lambda Electronic with metric threads Apr 25, 2004 · continous injection systems like youre k-jet are known as cis for the reason that they continously inject fuel into the engine. no more than 4 mins. If a problem Jul 4, 2020 · DESCRIPTION The Bosch Continuous Injection System, Fig. Excess fuel from the pressure regulator flows back through a return line to the fuel tank. Oct 4, 2005 · I tested the effects of increasing and decreasing fuel pressure on my running engine. Dec 12, 2014 · The air stream controls fuel volume. 5). Bosch CIS Training Series 1: What’s Needed to Test K-Jet and KE-Jet Fuel Pressure. FUEL -- Remove the Bosch CIS components consisting of mechanical fuel injectors, fuel distributor, air flow sensor assembly and miscellaneous warmup and enrichment devices; they will no longer be used. The TROUBLE SHOOTING and DIAGNOSTIC TESTING sections will help in diag-nosing problems with the CIS-E fuel injection system. Clean dirt off the fuel distributor cap. I have DATA-LOGGED the fuel pressure vs afr (chart below) and you can see the fuel pressure oscillating up to 20 times in 5 seconds so about 5 yo-yos per second. Nov 23, 2024 · Don’t bother with the pressure to the injectors, it’s not a helpful test. I have not yet adjusted the pressure regulator with shims to raise it into spec. DeLorean warm up regulator, Mercedes-Benz warm up regulator, Porsche warm up regulator, Volvo, Audi, Lamborghini. Volkswagen Fuel System ; Volkswagen Cabriolet & Rabbit Convertible Technical Information (Factory Fuel Systems) Porsche 911 (1973 - 1983) General Information on the Bosch K-Jetronic Injection System ; Tuning and Adjusting CIS Fuel Injection (Porsche 911) WORKSHOP MANUAL Porsche K-Jetronic (Book *. The fuel supply system is a closed loop system. leak down test; Fuel Jan 4, 2010 · Here's some more links on bosch Kontinuierlich Jetronic system. A MUST-HAVE IN YOUR SHOP TOOLBOX FOR TESTING ALL CONTINUOUS INJECTION & K-JETRONIC SYSTEMS. Fuel pump check valve: Bosch#1-587010532000 $14. If after checking the “Leaky gas cap” step and the cap is determined to be OK, then the WUR is at issue. 29 2) Tool aid 33800 same w/o case $74. 0 BAR at 20°C MAX: 2. Apr 27, 2005 · With the 8V engines that use K-Jetronic/CIS, the main fuel system pressure regulation is done by the pressure relief valve which is installed into one of the ports around the base of the fuel distributor (see page 240-14 in the Bentley 8V Saab 900 manual). 5 (FA side) to 12-mm x 1. The Bosh fuel distributor has a test outlet for that. So something is blocking the control pressure. , 2 min. If during a system pressure and performance test it is determined that the warm-up regulator is at fault, you are faced with an alternative: replace it (list price now about $280) or Oct 28, 2004 · The Fuel Pump This type of high pressure fuel pump is denoted as a roller cell pump, with the fuel entering the pump and being compressed by rotating cells that force it through the pump at high pressure. 2: View of Bosch CIS-E Diagnostic Tester The fixed on-off ratio indicates a possible malfunction. It is a fairly simple DIY job but will all the confusion and misinformation on the internet; one would believe it is a complicated process that is hard to understand. 6 BAR at 10°C 2. ) Fuel filter Injectors Intake manifold Engine English 3 Diagram B– Piggyback example (for CIS) Gauge and hose assembly 71404 M8–1. After re-pressurizing the system, if the Residual pressure is now within spec, then the either the WUR or the gas cap is at fault. What do you think of these pressures with respect to Bosch spec for the 045 WUR (Bar is my control pressure, refBar are the spec range from Bosch manuals)? Are these control pressures what your well-running 045 WUR produces? Mar 27, 2008 · "An engine equipped witha Bosch CIS (K-Jetronic) fuel injection system depends on the accuracy of the control pressure for starting and drivability performance. Dec 11, 2008 · Relieve fuel system pressure. For both K-Jetronic and KE-Jetronic 6 cyl. 11: Wiring Diagram for 190E CIS-E Fuel Inj. 91 S and G . Utilize the same fuel line you used from the above test. How to test cis fuel pressure. com FREE DELIVERY possible on eligible purchases May 22, 2020 · CIS is an electro-mechanical fuel injection system created by Bosch and put into production cars from 1973 to 1994. Additional features and contents: * Test: -- C. 12 of them. System pressure for all normally aspirated 911s is 5 Bar. 00 x M12–1. If the pressure is low but the volume is acceptable,replace the system pressure regulator. If you own, plan to own, and want to enjoy driving your old CIS fuel-injected Mercedes, Kent highly recommends you learn to do a full fuel system flow and pressure test. Mar 6, 2016 · So to test primary pressure I close the valve, jumper the RPM relay right? The technical manual says the pressure should be 4. What you are looking for is a differential between the upper and lower chamber pressure at the fuel distributor. Jan 21, 2003 · The 0. 2 Bar, all models. E-Electronic with metric threads (Will not test other Bosch fuel The Bosch 69435 fuel pump is used on the 1984-1987 190, 1987-1989 260, 1977-1981 280, 1986-1992 300, 1981-1985 380, 1976-1980 450, and 1984-1985 500 engines with CIS injection. Steve has done a phenomenal job in walking you through the steps. 2 Bar - below spec. 1 mm shim increases the line pressure by 0. The system I'll be talking about is K-Jetronic, and came in the early water-cooled Volkswagens and Audis, from the late 70s to early 90s. Ideally I'd like to keep the fuel pump but I'm afraid I will will end up with a hose with a 10mm banjo if I order the 78-79 part, 91135606607. date) 1973. The Fuel Pressure Tester Kit works on most domestic fuel injected vehicles having a Schrader valve test port on the fuel rail. For A 1980 to 1983 308 GTSi and a 0 438 140 083 WUR, the values are as follows: Fuel Pump Delivery : 1100cc / 30 seconds COLD Control Pressure for a 0 438 140 083 WUR and full vacuum applied: MIN: 1. 2 fuel filters, 2 distributors, 2 air filters, 2 fuel distributors etc. Aug 20, 2009 · Fuel Pressure Gauge for CIS pressure measurements (Click here for WUR pressures) This is the fuel pressure gauge setup needed to check the system pressure (set by the fuel distributor) and the control pressure of the Warm Up Regulator. Beginning with the fuel pump which should produce 5-6bars pressure (87psi), a working and sealing check valve behind the fuel pump, the fuel accumulator, WUR, the fuel distributor and not to forget - the injectorsif only one part of this daisy chain won't work properly, it will compromise CP Rest Pressure Kit A1 1 TM User’s Guide Control Pressure Rest Pressure Kit For 1974 to 1977 Bosch CIS Systems Note: The fuel system should be under pressure even when the car is off. 56 1:14 CIS Flowtech 9389Twin Beech Rd Fairhope, AL 36532. I ordered a new Bosch injector and the one I received also has an (014) stamp on it. 5 bar. non-electronic with metric threads -- C. Mar 23, 2024 · - System pressure is 4. The very instant the FP ran, that's your cold fuel pressure. Fig. Connect connector B of the fuel pressure gauge to the B port of WRU ( shown in picture 3). Example 1. Injection valve(s) leaking, opening pressure toolow(see Mar 10, 2024 · While trying to get the car started, the original fuel pump failed, and I found the old injectors weren't opening under pressure. 12: Wiring Diagram for 300E CIS-E Fuel Inj. Other Bosch CIS systems may be similar, however later model cars were upgraded with electronics for emissions control. 0-5. Consult the factory manual or fuel injection manual for the procedure. S. The extra fuel is then return to the main fuel tank via WUR and FD relief valve. Warm Up Regulator-( CIS ) Control Pressure Regulator by Bosch. Any rubber hose supply house will have them and the gauges pretty cheap. As the WUR heats up it allows less pressure to bleed off and the control pressure is higher resulting in a leaner mixture. Deactivate fuel pump and relieve fuel system pressure. pdf file) Mar 10, 2011 · If the pressure is too low,check the fuel pump volume. The system in general is very reliable, and was only bested in 1984 by the introduction of the Motronic engine management system that controls both ignition and fuel injection together. The Bosch CIS problems/symptoms are exceptionally well known and documented thoroughly. g. 67/lower NAPA #1243 0- Incorrect cold control pressure (seeWarm-up Regulator) 10. Diagnose first, then replace parts. and record Mar 28, 2016 · John, thanks for that. ) CIS, or continuous injection system, is a method of fuel injection which is very different from modern cars. The pressure test kit includes a 100 PSI fuel pressure gauge with a quick release valve and seven hose assemblies with four paired hose adapters. com FREE DELIVERY possible on eligible purchases Oct 16, 2022 · See, e. Bosch CIS Training Series 4: How to Hook Up and Test K-Jetronic Fuel Pressure mercedessource Product - For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines This video will help you decide if you want to try to do a fuel pressure test yourself. If the fuel pressure is high,disconnect the return line from For Bosch C. Make sure fuel filter is not clogged. This document provides technical instruction for the Bosch K Jetronic fuel injection system used in automobiles. Bosch CIS Is K-Jetronic Apr 11, 2020 · The Porsche 928 continuous injection system is very robust when properly set up. The six differential pressure diaphragms can be adjusted with their adjustment screws, though usually one only adjusts them so each fuel injector discharges at the same rate as its Bosch CIS (cont. The third check is for residual pressure. 110. , Mercedes NEW Warm Up Regulator BOSCH 0438140056 Fit 350, 380, 450, 500 – Fuel Injection Products I had previously understood that the bottom port was always the vacuum port on 2-port WURS, but reading up on other CIS cars, I now see that there are some 2-port WURs where the top port is for vacuum and the bottom port is the vent Feb 11, 2008 · Techron works really well. These valves are adjusted during assembly of fuel distributor and cannot be adjusted in service. Jan 26, 2007 · Now today I got my Bosch CIS tester in the mail. The UTCIS can only be used to upgrade CIS K-Jetronic systems. Fuel is continuously My control pressure is way too high, 75 PSI, basically the same pressure as the main fuel pressure. My question is regarding a recommended replacement fuel pump? My car currently has an original fuel pump that is completely different than Bosch #0580254985, for example which evidently wa Oct 13, 2008 · I have a gauge for system pressure already, adding the control pressure side when the engine goes back in. Ignition Coil C90i-E8; Ignition Coil C90i-E10; Ignition Coil C90i-pro; Ignition Coil C90i-pro evo; Ignition Coil C90i-WG; Ignition Coil P50/P50-M; Ignition Coil P65 Apr 16, 2013 · You need a gauge that will measure pressure in the 0 to 100 psi range as in 0 to 7 bar accurately so don't get one that goes to 400 psi. This will relieve the control pressure. 2. 8 bar (about 10psi) and slowly increase to 2. My fuel pumps are 1 and 2 years old respectively with less than 1,000 mikes and still reading . I test them for cracking pressures and group them into: Group I: 36~42 psi. com Nov 18, 2009 · Some of your questions have been answered by others. Jul 2, 2013 · With the valve on the fuel pressure gauge in the OPEN position (and again with the ignition key in the ON position and the fuel pump running), record the fuel pressure and the ambient temp. Interestingly enough the cars to bookend CIS application were both 911s. The Volvo CIS (K-Jetronic) manual I have lists the following trouble shooting chart for low top speed (poor engine performance): Mar 31, 2010 · If your fuel pressure gauge is similar to mine (shown in picture 1), then you can do the following: 1. Im calling it electro-mechanical to distinguish it from the performance-oriented Bosch mechanical pump injection that preceded CIS in high performance and Aug 14, 2017 · Fellow Porschefiles: I have an early (June 1973 mfg. 0 stock ROW SC with a newly rebuilt WUR and distributor and measured fuel pressures for anyone's comment. Tests C. The fittings in the Fuel Injection Fittings Kit let you connect a pressure gauge into the fuel system to test the pressure of the fuel pump, supply (delivery) lines, and return lines. /Lambda Electronic with metric threads and C. Injection valve(s) leaking, opening pressure toolow(see May 18, 2023 · So you bought a vintage Audi, BMW, Mercedes, Saab, Volvo or VW with the Bosch CIS fuel injection system. Apr 28, 2021 · I've replaced the fuel pump with a new Bosch unit, new filter and new injectors. 4 bar (89. Sep 3, 2014 · The system pressure was also in spec at 4. I. Those items have been replaced, but now I have no spark so I'm chasing that gremlin down. Jun 21, 2017 · You can lower the warm control pressure in the WUR by raising the big plug so the FD presents less pressure countering the rise of the fuel plunger to the slots. the injectors never turn on or off like a conventional system. NOTE: When connecting to a fuel system, use the The fuel distributor has the functions of regulating the fuel pressure, adjusting the fuel flow to the injectors based on the position of the air flow sensor and the control pressure from the WUR. You can also use the Kit to test the fuel pump output volume. Aug 11, 2011 · On a similar note about the injectors I have an 87 Testarossa, which has the Bosch injection system. 56 $ 25 . After calibrating hundred’s of these Bosch WUR’s, you will be able to establish that the factory manual instruction is not the ideal location. Typically around . The fuel pressure at 74 will work but 80 is better. It details the components and functions of the K Jetronic system, including the fuel distributor, fuel pump, pressure regulator, and injectors. We can exchange many of the Bosch warm up regulators and fuel distributors for a rebuilt unit from our shelf! Jan 24, 2007 · And yes, lower control pressure = richer, and vice versa. . Multi-port means one fuel injector per cylinder. com FREE DELIVERY possible on eligible purchases Aug 11, 2012 · 1: No fuel pressure, or less than 50 PSI. Jump to Latest Fuel Pressure Regulator Part Number(Bosch): 0438161010 VAG/OEM Part Number: 034133534G Fuel Accumulator - Three Fittings - BOSCH CIS K-Jetronic Fuel Injection - (1976 - 1994) Porsche 911 / 930 / 964 Turbo (965) - Porsche Genuine oem/oes Bosch (0 438 170 031) - Sold Each - 1 Per Car - Supersedes# 911 110 197 02 / 911 110 197 34 / 911-110-197-34 / 911. 1mm thick and change pressure by 0. 4. 2 psi) per shim. Shipping Tips . S K-JETRONIC FUEL INJECTION PRESSURE TESTER. System Pressure - nominal 5. Tests: Fuel pump check valve i. This test of the Bosch CIS system checks the system pressure as well as the control pre Oct 30, 2020 · With all this done i have a digital fuel pressure gauge in the cab and i can see the fuel pressure oscillating wildly. 14: Wiring Diagram for 560SL CIS-E Fuel Inj. 2: Jammed and/or sticking airflow sensor. 5 days ago · This in-line pressure tester indicates problem sources - control pressure regulator, fuel distributors or other specific fuel injection components that may require replacing. Pressures System Pressure On the Bosch K-jet systems, this pressure can be measured at the top of the fuel distributor by connecting a continuous injection system pressure gauge from the top fitting in the fuel distributor (this is the horizontal one) to the warm-up regulator. FUEL PRESSURE DIAGNOSIS Fuel Pressure problems generally fall into two categories:higher than normal and lower than normal operating pressures. I wasn't sure about the ebay all purpose kits, but will give one a go. The Bosch number on your fuel distributor Dec 18, 2017 · Through my related thread on "CIS and Fuel Pressure Distributor Seat" for my 1978 VW Rabbit where I discovered (with the help of others) the control pressure regulator was plugged at its inlet and should be replaced, I found out there were about 60 variations of it by Bosch. Warm control pressure too high (seeWarm-up Regulator) 11- Do- 0-IIN- No. 39/each Fuel pump: Bosch#0580254947/Ferrrari # []$222. Remove the air cleaner and loosen the center line on fuel distributor. 50 male Bosch CIS (cont. It is supposed to be 30-45 PSI depending on temperature. Aug 1, 2023 · Porsche 911 DIY Repair Blog: http://joe-engineer. 00 female x M12–1. You will need an adaptor to connect your CIS gauge to the fitting you disconnected from the fuel accumulator. The Bosch K-Jetronic CIS fuel distributors are common on all 928s that use these systems. This is a huge advantage on air-cooled engines where the heat soak is brutal. 1V to 12V, which allows me to adjust the EGT on the fly (from the cockpit). Pressure regulating valves in the fuel distributor equalize system pressure. The fuel is pumped by an electrically-driven roller cell f uel pump. During operation the intake air quantity is metered by an air-flow sensor installed in front The pressure test kit checks electronic and standard Continuous Injection Systems, GM throttle body, Ford CFI, and Asian and European AFC. 1. 8 bar (about 40psi). Copper crush rings for fuel distributor-to-WUR line: NAPA#2-17447 $1. I disconnected the O2 sensor from the Oxy Control Module to force it out of the loop so I could read A/F from the O2 sensor as it changed from fuel pressure. 6)1987 Mercedes-Benz 560SL Fig. 5 bar below system pressure depending on temperature. Most of the CIS fittings are 12mm. Good work Dave! 01-19-2010, 09:22 AM With CIS, wouldn't increasing the fuel pressure lean it out? Aug 11, 2004 · 0-140PSI Fuel Injector Injection Pump Pressure Tester, Fuel Pressure Tester Kit, Universal Fuel Pump Pressure Tester Gasoline Car Truck Motorcycle Diagnostic Tool 426 $25. 123 Chassis models with gasoline engines were built with CIS fuel injection only. This in-line pressure tester indicates problem sources - control pressure regulator, fuel distributors or other specific fuel injection components that may require replacing. With a pressure gauge and appropriate valve, your hot/warm start problem could be diagnosed efficiently. However, it requires clean fuel and pressures set to the correct specifications. Welcome to Fuel Injection products We specialize in Bosch Fuel Injection Systems BOSCH & C. When installed, the gauge will look like an upside down […] Apr 22, 2023 · What are the Bosch ID # of the WUR & FD in your motor? The cracking pressures for the CIS fuel injectors is 36~52 psi. 9 - 92. Test the fuel pump (all 190s) and pre-pump (of those 190s that have two pumps) and do a fuel pressure and volume test. The pump should be able to deliver 0. For the CIS racers, you can adjust the control pressure using various methods, including varying the voltage to the warmup regulator. injector is equal. The first one has good pics, it's a 6 port fuel head from an SC instead of an 8 port fuel head origonally cast for a V8 Mercedes like the 930 fuel distributor but they are very similar so that doesn't matter as far as becoming familiar with the internal parts by picture How to build a cis test rig. the distro just adjusts pressure and flow according to the demands on the engine. Dec 23, 2023 · Its last iteration, KE-Jetronic (also known as CIS-E or “Continuous Injection System-Electronic”), designated the addition of electronic control for emissions and fuel economy compliance in 1985, before Bosch’s digitally computerized LH-Jetronic made KE-Jet obsolete in 1993. This 6 page procedure is designed to guide you through setting a baseline fuel tune on your early 928 with Bosch K-Jetronic CIS. I plan to check out the pressure. 0 BAR at 10°C 2. 0L to this problem, all fuel injectors, injector grommets, fuel pumps and fuel filter were replaced and the car was running very strong. This includes Ford high pressure central fuel injection and GM, Ford, and Chrysler multi-port fuel injection. Bosch CIS Training Series 4: How to Hook Up and Test K-Jetronic Fuel Pressure mercedessource Product - For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines In this video, you will see how the gauges are hooked up to a 560SL and how the pressures are read. The fuel pressure regulator is the dividing Dec 23, 2011 · Checking the system and control pressures is as simple as installing the proper gauge between the fuel distributor and the control pressure regulator. BOSCH CIS-E SYSTEM Article Text (p. Can anyone please confirm these values? When the WUR is cold it allows a lot of pressure to bleed off resulting in a low control pressure and a richer mixture. 4 bar. 4 and 3. Repairing a fuel distributor is a precise job that requires basic metric tools, fuel pressure gauges, and some shop made Types of Bosch High Pressure Pumps CP3x CP1x CP4x High Pressure Pump (Common Rail Pump) Bosch common rail high-pressure pump continuously generates high-pressure fuel and supplies it to the rail. Also, there may be a blockage in the supply line or leakage in the return line. Failure mode: On relatively rare occasions, an internal problem may occur which can result in faulty metering of fuel to one or more cylinders. That fuel pressure differential should be documented in your specs sheet/manual. Referring to the typical CIS hookup diagram, hook up the tester between the fuel distributor and the control pressure regulator. Injectors, CPR, fuel distributor, pumps will all get unvarnished, the death of k-jet. Mar 25, 2010 · I have been looking for a CIS specific fuel pressure test gauge set and this is what I have found. Bosch CIS Training Series 2: Options to Get Fuel Pumps to Run with Engine Off. When the fuel lines are first loosened about 10cc of pressurized fuel will squirt out. All units are remanufactured unless otherwise noted new and carry an 18 month warranty. If the system has none of these, the fuel system pressure needs adjustment. 5 bar lower system pressure. 4 BAR at 20°C Control Pressure WARM: Nov 15, 2021 · Buy JIFETOR Universal Auto Gasoline Gas Fuel Injection Pressure Tester Gauge Tool Set Only for Bosch CIS System Car Truck SUV Motorcycle ATV RV SUV Blue Case: Automotive - Amazon. com/store/1976-1993-cis-fuel-injection-partial-diy-pressure-test-kit. The design is typically German, simple, reliable, and very ingenious. This is too broad for my taste. To which I say, “Cool” I cut my teeth on CIS as a young tech back in the 80s and 90s, and have a strong fondness for the system. 3. Replace if doubtful. I've got a system that can vary the voltage from 0. 50 male w/ o-ring 71408 Connecting hose and valve assembly 60410 M8–1. 1) Tool aid 33865 Gauges CIS fittings and plastic case S and J . System pressure is the other way around. Hardware f Large, easy-to-read 0-100 psi scale f Solid brass fittings f Pressure relief valve for safe, clean testing Tests: f Fuel pump check valve i. Jan 13, 2008 · I have the BOSCH K-Jetronic Service Guide. Full kit is available below. Oct 22, 2022 · CIS-E Fuel(Diaphragm) Pressure Regulator Failure. I cleaned the fuel tank with POR-15 marine clean and plenty of hot water. If the volume is low,check the fuel filter and the line for kinks. Mar 24, 2012 · There is. Bosch is the leading manufacturer of fuel system components, ignition parts, and all other electrical components for European auto manufacturers, providing innovative May 8, 2011 · Bosch Fuel Injection Systems, Forbes Aird ISBN-10: 1557883653 This easy to read manual includes basic operating principles of Bosch's CIS K-Jet, KE and pulsed fuel injection systems; D-L- and LH-Jetronic, and LH-Motonic tuning and troubleshooting; and some info about high-performance applications. From the reg to the top of the fuel distributor will confirm if the reg is working correctly, make sure you have the Dec 27, 2020 · For some time I have posted here at BenzWorld about the KE-Jetronic and how to do quick & targeted diagnosis in case of CIS-E engine issues. It needs to have a shutoff valve so you can measure system pressure. I used a 5l fuel can for this. Then, replace the fuel filter and take a peak at those o-rings, the fuel pressure regulator valve and the fuel injection cups. CIS Fuel Injection Components Also called K-jetronic, this fuel injection system was used on six cylinder Porsche® after MFI, from 1973. 6bar), and lets some of this pressure drain to the fuel return line, so the pressure is reduced. Group III: 50~55 psi. Now run the fuel pump for exactly 30 seconds and measure how much fuel is in the Oct 8, 2020 · Hi - I’d like to shim my fuel distributor to obtain correct system pressure. The main fuel pressure is fine (about 75PSI). , etc. They all have the same Bosch part number on them, but the one with the higher output and crack pressure has an additional stamp on it (014). leak down test f Fuel pressure regulator f Weak fuel pump f Fuel line integrity i. 72 Accumulator: Bosch# 438170004/Ferrari #113978 Fuel filter: Bosch#71039(0450905601)/Ferrari #117792 $16. SystemsWith this in-line tester the mechanic can find bad fuel pumps, bad pressure regulators, leaking injectors and clogged fuel filters. Mine ends in a part number of 011, vary basic. Jul 29, 2020 · Fuel Injectors. With all this done i have a digital fuel pressure gauge in the cab and i can see the fuel pressure oscillating wildly. Jul 16, 2018 · My car currently has a Bosch 044 fuel pump with an external check valve that requires a 12mm banjo. Feb 1, 2012 · Esprit Xtrême '88 X-330 & "Mad Max" '95 S4s Visit: X180 IMPROVEMENTS, S4s,S4,SE UPDATES & IMPROVEMENTS, Intercooling Bosch injected, non-chargecooled engine, Lower cost Bilstein option!, 1986-88 Bosch CIS K-Jetronic injected Esprit specific items, 1986-88 Esprit Bosch CIS K-Jetronic Electric Quirks, May 24, 2022 · Don't forget - it's all about pressures on a CIS car. The adaptor would be 14-mm x 1. I have a dash gauge that reads WUR fuel pressure, so I can see from start-up how the control pressure increases as the engine warms. Fuei is prmped from the tank to the pressure regulator and injectors,and excess fuel is re- turned to the tank. To evaluate the control fuel pressure, plug the electrical connector to the WUR and run the FP for 4 mins. 0-4. The length of this 30-minute shows the detail Kent has put into filming all the critical components of doing a KE-Jetronic fuel system pressure test. The fuel pressure delivered by the FP is in excess of what's needed by the fuel distributor (FD) which have been factory pre-set. 5 mm shim increases the line pressure by 4. It is supposed to be something like 0. 0- Incorrect cold control pressure (seeWarm-up Regulator) 10. Mercedes 116 and 107 chassis models were built with both Bosch D-Jetronic and CIS K-Jetronic fuel injection systems during their production life. According to Carl Rose's "Ferrari 328 CIS Fuel Pressure Check" those values should be between 1. Increased fuel pressure leans the engine and decreased pressure richens the engine. Jan 8, 2009 · Let's pretend that the guy in the picture above is the fuel accumulator delivering a 'back pressure' against the fuel return pressure going to the tank and supposedly preventing the gasoline from entering the lower chamber of the FA under test as claimed by some knowledgeable people. PS I see on many F part supplier websites that they are selling Bosch 0580464125 as being Ferrari PN 121727 -- but this is not quite right. Primary pressure is 5 bar Control pressure starts at 40 psi and slowly stabilizes up to 50 psi or 3. Closely observe the control pressure build up after 1 min. NEW FUEL ACCUMULATOR With all this done i have a digital fuel pressure gauge in the cab and i can see the fuel pressure oscillating wildly. Mar 25, 2010 · According to the "Bosch Fuel Injection & Engine Management" book you simply run the fuel pump for 10 seconds and shift the CIS pressure gauge valve back and forth a few times to clear the entrapped air from the CIS system. ALWAYS follow these precautions: 1. This product is particularly intended for BMW, Mercedes Benz, Porsche, Saab, Volkswagen and Volvo cars. Features: Injection pressures ranging from 1,400 to 2,800 bar can be achieved with different generations of Bosch CRS For more than ten years, Porsche used the Bosch K-Jetronic Continuous Injection System (CIS) on all production 911s. The pump is capable of producing a pressure of 8 bar (120 psi) with a delivery rate of approximately 4 to 5 litres per minute. I did a couple of applications and let it dry in the With the valve closed (FP running) you get the system fuel pressure. I strongly believe that the fuel pressure regulator in the fuel distributor was shimmed wrong on my car! I was reading that to add pressure you need to add shims and to reduce pressure you need to take away shims. While at startup, engine (and WUR) still cold, if I immediately did the simple airflow sensor raise/lower check, on pulling down on the airflow sensor plate, the engine speed immediately increased several hundred May 17, 2023 · Buy MANUTEX Fuel Pressure Test Kit Fuel Pressure Gauge Complete Kit for Car Truck Motorcycle 0-140 PSI 45PCS: Fuel Pressure Testers - Amazon. Even the factory manual excels here. The document aims to explain how the K Jetronic system works and provide guidance on diagnosing and repairing issues. Stricter emissions standards were at For common rail components (e. This is part five of Kent's six-part Nov 15, 2021 · Buy JIFETOR Universal Auto Gasoline Gas Fuel Injection Pressure Tester Gauge Tool Set Only for Bosch CIS K-Jetronic System Car Truck SUV Motorcycle ATV RV SUV Red Case: Industrial & Scientific - Amazon. Figure 5-3 taken from Chapter 5, page 19 of “Bosch Fuel Injection & Engine Management” Charles O. TROUBLE SHOOTING - 420 & 560 SERIES DIAGNOSTIC READOUT Connect Bosch Tester (KDJE-P600) to CIS-E diagnostic connector. E-Electronic with metric threads (Will not test other Bosch fuel Aug 8, 2020 · As long as the shut-off valve is installed at the WUR side. ) 14. Sys. com $82. 8 psi), so your 91 psi measurement look ok, so the system pressure regulator looks ok. Currently the control pressure is measured around 85psi and even when I close the valve there is very little change to the pressure gauge for system pressure. 85 psi and the 0. EFI systems don't have any cooling mechanism. I got a great deal on the same type Bosch brass injectors. range. Disconnect the fuel return line off the main regulator at the fuel distributor, extend it about 700mm and direct it into a suitable container of 1L or larger. 2 - 6. 5 Bar. The return line should go back thru the fuel cooler, then to the firewall. (Audi 80, VW Rabbit, Scirocco, etc. 15 bar/2. CIS fuel injectors are simply spring-loaded mechanical assemblies so theoretically you should be able to clean them, test them, and if the spray pattern and pressure at which they open and flow fuel looks good and they don’t leak, then they can be re-used. This can tell you if you have a weak fuel Mar 11, 2024 · Kit revised 3/11/24 https://mercedessource. 0 bar). It is frustrating that the purpose made k-jet kits only seem to be available in the states - and they want $100 for shipping and customs on top of the price of the kit, and a 4 week wait. Connect connector A of the fuel pressure gauge to the A port of fuel distributor (show in picture 2). My CIS pressure tester is permanently installed at the fuel distributor and just hook it up to WUR’s being tested. The CIS fuel pump is bigger than an EFI fuel pump because CIS re-circulates the fuel back to the tank to cool the system. Turn on switch C of the fuel gauge. 02 / 91111019702 / 0438170009 FUEL INJECTION PRESSURE TESTING FUEL INJECTION PRESSURE TESTING TU-449 HARLEY FUEL PRESSURE TEST KIT • M91 gauge (with hook for hands-free use) has a dual scale dial with ranges from 0-100 PSI and 0-7 bar; includes durable boot for protection • Use to diagnose driveability issues on fuel injected Harley-Davidson motorcycles • Easy installation for in-line FUEL INJECTION TESTER -GM Bosch K-Jetronic Upgrade Kit Neutronics offers, as part of it’s Emissions Upgrade product line, a series of specialized controllers designed to convert open-loop Bosch (CIS) fuel injected vehicles to closed-loop feedback control. clogged or damaged fuel filter CIS Fuel Injection. -My WUR is not stock - see pics. youre cis does indeed recirculate fuel back to the tank, but do does most other fuel injection Feb 3, 2020 · Now, the first thing you need to test is the fuel flow from the pump. I am measuring near the entry to the DWUR. 197. 5 gpm (gallons per minute) or more. 34 / 91111019734 / 911 110 197 02 / 911-110-197-02 / 911. 7 bar (part of our early cleaning processes during the reanimatino had freed up the stuck fuel pressure regulating piston and spring assembly) Finally, we checked our control pressure—which the CIS injection uses to counterbalance the airflow meter's movement and balances against the system pressure. Fuel does not go to the 6 injectors (cylinders) until the plunger (AFS) is raised up. Non-Electronic with metric threads, C. The pressure should be checked there first as it has a affect on everything else. Bosch introduced the CIS-E (Electronic) fuel in jection system in the early '80's on some Audi, Volkswagen, andMercedesBenzmodels, as well as other European cars. 15 Fuel filter upper copper gasket NAPA#1242 $0. Vehicle Find many great new & used options and get the best deals for MERCEDES BENZ Cis Injection Bosch FPR Fuel Pressure Regulator 0438161001 II at the best online prices at eBay! Free shipping for many products! Jun 5, 2008 · The fuel line coming from the firewall to the Fuel Dist is the main in from the pump. 13: Wiring Diagram for 420 & 560 Series CIS-E Fuel Inj. Thechange to CIS-E followed the normal evolution of the fuel injection systems wehad become familiar with—CIS, CIS-Lambda, then CIS-E. Sep 22, 2020 · If you have worked with older European cars, then you have likely encountered Bosch CIS injection. If you decide to repair your fuel distributor you do so at your own risk. e. May 14, 2002 · I don't know how to help you with the CIS-E, since I use CIS. IDEAL FOR TESTING: MERCEDES-BENZ BMW, PORSCHE, SAAB, VW VOLVO FUEL DISTRIBUTORS WUR, AND MORE. Jan 24, 2010 · This chart shows the Bosch Part Numbers for Fuel Pumps. 3 psi according to Volvo. Group II: 43~49 psi. These in-line pressure testers indicate problem sources, like control pressure regulator, fuel distributors, or other specific fuel injection components that may require replacing. Does anyone have the dimensions for them offhand so I can have them at the ready to dial in the pressure? fuel injection. Also known as ( Cis ) Control pressure regulators. 12 cylinders and 12 injectors, It really looks like 2 six cylinder engines put together. For the Turbo cars (930) system pressure is higher, around 6. 5 (CIS gauge side). 67/lower NAPA #1243 Mar 11, 2009 · Next read the lower chamber pressure. Control Pressure (Cold and Warm) - see WUR fuel pressures, model specific. E-Electronic with metric threads (Will not test other Bosch fuel precise fuel pressure and adequate fuel volume. I stopped posting in BW’s R107, W124, W201 forums quite a while ago because there was (and still is) simply too much wrong info/advice posted and, unfortunately, no one there corrects it. E-Electronic with metric threads (Will not test other Bosch fuel Ok so I competed some tests this morning. Porsche 911 DIY Repair Blog: http://joe-engineer. May 5, 2007 · Here's a summary (vastly simplified) of the conversion from the Bosch K-jetronic CIS to MegaSquirt EFI in my 1978 450 SEL: Phase 1. Currently the fuel delivery contains a normal hose clamp which is a solution I'm not satisfied with. uqou wgira xmsa tssiahz euuk aqpuc huoiq dnqeq quxqc ewxwm