Comparison of older style bosch ev1 vs newer bosch ev14. Please refer to our instruction manual on cleaning cold start injectors with the pulse generator. All you need for diagnostic tools is a fuel pressure gauge and a multimeter, and a manual. Bosch l jetronic fuel injection troubleshooting, maintenance. The bosch l jetronic also called afcair flow controlled fuel injection was put into usspec type 4s in the last model year 1974. Genuine komatsu bosch k jetronic fuel injection manual easy fix 206. Thanks to scotty of global import parts 6185291644 for loaning us this manual. One thing that i have not been able to find is a good no start trouble shooting guide or write up for the bosch ljetronic system. Bosch kjetronic seems to be a bit of a black art these days. It seems there are several versions of the bosch manual. The service manual that i have is the best step by step guide but it relies heavily on having access to a bosch tester. Sep, 2020 download bosch ljetronic injection manual. The geometry of the valve and the single orifice below it determines the spray pattern and the distribution of the droplet size. The ljetronic was the first massproduced, fully electronic fuel injection system.
Gregs bosch ljetronic fuel injection idle adjustment, diagnostic and tune up page, latest revision sept. It is not a complete listing or a substitute for a proper shop manual. Porsche 912e technical manual pdf download manualslib. The bosch djetronic is an analog electronic control unit ecu developed in the sixties, when microprocessors were not jet available for general use, but this is not to say that the complex calculations crunched digitally by screaming fast arithmetic logic units alu of todays injection ecus, were not perfectly capable of being processed by. Use the idle speed screw 1 to set idle at 850 to 900 rpm on manual. Bosch ljetronic fuel injection troubleshooting, maintenance. While all bosch workshop manuals recommend the bosch efaw 228, i can calm you down that you do not have to spend up to for such a tool. About the only thing that can go wrong with it is the plug can work loose if its not secured properly or the pins can get a little corroded which interfers with signals from sensors. Bosch technical instruction l jetronic pdf manufactured by the company bosch presented for you in electronic format page size 586 x 829 pts rotated 0 degrees. The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle bosch technical instruclion series. All measurements quoted are based off the ford cologne v6 and tvr tasmin 2. Originally, volkswagen adapted the ljetronic for the type 4 air cooled 411 engines sold in the united states due to more stringent emissions and fuel consumption regulations. The jetronic is a very reliable unit and rarely needs attention.
The bentely manual does an excellent job of explaining fi diagnostic procedures. While new carburated engines were used in the european markets, vw adapted the ljetronic for the type 4 in the us due to more stringent emissions and fuel consumption regulations. A friend in germany had a manual with waubf 9101 dbfsp 7. Ljetronic fuel pressure testing itinerant aircooled. Fortunately there hasnt been a recent spat of my car cranks but wont start posts.
Bosch ljetronic l jetronic rx7 brought to you by the team at. Ljetronic with lamba closed loop control bosch technical instruction series. In reality, the ljetronic system is very simple, very reliable, and easy to diagnose. Oct 24, 2014 technical manual ljetronic fuel injection. Bosch kjetronic part 2, testing tastes like petrol. Ljetronic the bosch ljetronic also called afcair flow controlled fuel injection was put into usspec type 4s in the last model year 1974. Bosch k jetronic fuel injection manual from facebook. The bosch l jetronic fuel injection system used in the porsche 912e is often.
Volkswagen type2vanagon djetronic fuel injection pro training manual. Spec alfa romeo gtv6s, milanos, and 19821989 spiders, bmw e12 5 series and various 3 series cars, the datsun 280z and 280zx, all u. So i will be going more teeth one way or the other than is p. Nov 21, 2009 bosch k jetronic fuel injection manual 50,397 views. Information bosch technical instruction l jetronic this handbook has 21908071 bytes with 28 pages presented to you in pdf format page size. Le1jetronic, le2jetronic, le3jetronic 19811991 this is a simplified and more modern variant of ljetronic. Bosch ljetronic fuel injection guide fiat fuel manualzz. Good bosch ljetronic manuals i found alfa romeo forums. Bosch kjetronic part 1, the basics tastes like petrol.
Bph105 gasoline fuelinjection system monojetronic bosch technical manual. Even though it has a premium version for faster and. Diagnosis of a no start condition ljetronic this is a short guide to some common causes for a nostart condition. Hopefully this series of posts clears up some of that misinformation and scaremongering, and opens more people up to working with their kjet instead of binning it, or neglecting it until it inevitably fails.
Books pics is a cool site that allows you to download fresh books and magazines for free. Kjetronic cis fuel system diagram shown below is a schematic diagram of fuel lines in a kjetronic as a whole with noise damper and drain line at the fuel accumulator. All, i found two great links for bosch l jetronic manuals. Bosch ljetronic fuel injection manual volkswagen type2vanagon djetronic fuel injection pro training manual. Vw ljetronic fuel injection workshop manual author. This bosch training manual will help explain the workings and functions of the ljetronic fuelinjection system on 914 and 928 models. Mar 01, 2016 checking and repairing the bosch kejetronic fuel distributors by vitaly march 1, 2016 approximately up until 1994 mechanical fuel injection systems have been installed on certain mercedes, audi, volkswagen, ford etc. Reproduction, copying, or translation of this publication, including excerpts therefrom, is only to ensue with our previous written consent and with source credit.
A thorough understanding of the various components is required before working on kjetronic fuel systems. Almost anyone you mention it to backs off and cringes. The pressure gauge kdep 1034 is the same unit used to test robert bosch k jetronic cis systems and reads from 06 bar pressure. Sep 25, 2020 bosch ljetronic injection manual above is a diagram of an ev1 style top feed injector old 80s japanese injectors, like on the 2nd gen rx7, are similar. This is the most complete service repair manual and are self cleaning d31px21, d37ex21, d37px21 dozer secured checkout process. The bosch ljetronic fuel injection system used in the porsche 912e is often. The bosch ljetronic also called afcair flow controlled fuel injection was put into usspec type 4s in the last model year 1974. We have the ability to develop silicone components and custom applications to fullfill all our customers needs. Before troubleshooting, testing or adjusting the kjetronic fuel injection system, the ignition system and the mechanical system of the engine. I just stumbled across this manual from bosch for the ljetronic system.
Illustrations, descriptions, schematic diagrams, and other data only serve for explanatory purposes and for presentation of the text. This manual can be viewed on any computer, as well as zoomed and printed, makes it easy to diagnose and repair problems with your machines electrical system. Hpsi offers many services to the public and private entities, including the development of special parts and tuning solutions. This manual can be viewed on any computer, as well as zoomed take a closer look at the sample image for the most accurate information on the use of the book and printed. Combined ignition system and luel injection system molfonlc. The bosch manual is pretty bad but it gives you an idea of what accessories are available. Performance parts and silicone hose hpsi motorsports. The efaw 228 is nothing but a multimeter for measuring voltage or resistor plus a switch to activate your fuel pump permanently. If you want to measure deeply in your djetronic, you will need a multimeter. Ljetronic system control unit, basic schematic n this is a generic system schematic. Ljetronic fuel pressure testing post by randy in maine thu jan, 2011 2.
Despite physical similarity between ljetronic components and those produced under license by other manufacturers, the non bosch systems should not be called ljetronic, and the parts are usually incompatible. How l jetronic works in 1980 fiat introduced a bosch multiport fuel injection system. This diagram was adapted from the porsche 912e workshop manual and has been enhanced to provide additional information to assist in isolating fuel injection problems. Bosch ljetronic fuel injection troubleshooting reference. Page 20 ljetronic system diagram the next diagram is a schematic drawing of the complete ljetronics fuel injection system. All, i found two great links for bosch ljetronic manuals. Vw ljetronic fuel injection workshop manual created date. The bosch ljetronic fuel injection system used in the porsche 912e is often referred to as the air flow controlled or afc fuel injection system.
1113 1506 402 673 4 1171 819 450 823 1295 1460 1091 344 205 589 650 661 1567 1340 850 1159 1141