Mercedes suggests that special tools are required to adjust the mixture on the Bosch KE3-Jetronic. (CIS-E) fuel injection, such as is used on the. Ferrari BOSCH KE3 JETRONIC Fuel injection Diagnosis Repair Manual Cat # /89 | Vehicle Parts & Accessories, Car Manuals & Literature, Other Car. There were three iterations of it in Audi’s – simplest KE-jetronic, with vacuum ignition or with electronic ignition, KE3-jetronic equipped 10v.

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The same goes for my Hirschmann antenna, share with some Jaguars but with a more agricultural connector style. If it is too tight, fast idle will result. Ok, fellas, I finally made myself to do this – I was thinking about it long time ago. Starting Test lambda control see “X11 Connector”above at RPM by taking an average reading of the signal at pin 3.

Bosch KE3 Jetronic 89 Injection System Manual |

This jetroni about 50 VPP, safe for an ordinary oscilloscope. I fitted the relay – which burned the fuse for the relay. If you want to do the job the Mercedes way, obey the engine service manual.

The LH-Jetronic was mostly used by Scandinavian car manufacturers, and by sports and luxury cars produced in small quantities, such as Porsche I read the part at the end but I still am not sure about turning the potentiometer do you know of any video guide to do it or something? Actually tests if ECU is working in closed loop. I have and am willing to share: See all condition definitions – opens in a new window or tab.


Fuel injection systems Embedded systems Power control Engine technology Automotive technology tradenames. Although conceptually similar to most later systems with individual electrically controlled injectors per cylinder, and pulse-width modulated fuel delivery, the fuel pressure was not modulated by manifold pressure, and the injectors ks3 fired only once per 2 revolutions on the engine with half of the injectors being fired each revolution.

Select a valid country. The reason that im suspecting I have a problem jetrpnic a little bit complicated Quick description is as follows: Caps are directing ventilation flow so that it would improve fuel atomization at low load.

Help – bosch K jetronic types?

Some technical information System pressure: Also, when connector is removed from ISV, idle speed should rise to around 1k rpm. Send a private message to Keso IIRC it should be 3,5 bar just after the pump has been turned on and 3 bar after half an hour.

Mono-Jetronic always had adaptive closed-loop lambda jeronic, and due to the simple engine load sensing, it is heavily dependent on the lambda sensor for correct functioning. No, create an account now. Car starts without applying any gas with the foot pedal. Direct test – for those that have oscilloscope. Contact the seller – opens in a new window or tab and request jetronif postage method to your location.

Steve Magnusson F1 World Ks3. Mixture adjustment Provided that everything works fine, mixture adjustment requires just long 3 mm [IIRC] hexagon screwdriver or bit and multimeter with necessary stuff to measure differential pressure current.

Tuning KE3 Jetronic

I am pretty sure that eha valve made for mercedes have mercedes connector and surely not the one made for ferrari. K-Jetronic debuted in the Email to friends Share on Facebook – opens in a new window or tab Share on Twitter – opens in a new window or tab Share on Pinterest – opens in a new window or tab Add to Watch list.


For engines with one ECU resistor is connected to both pins, for engines with two ECUs there are two resistors, each one is connected to one pin and other side is grounded, so each pin must be measured against ground and both measurements must be compared – they must be almost indentical.

Connect oscilloscope between ground and oxygen sensor connector and adjust it to read zero. As a mercedes jetroinc w 2. The ISV is ok as like you said the flap is fully closed and flings back easily. The volume of air taken in by the engine is measured to determine the amount of fuel to inject. If not, it can still be estimated with a voltmeter. Find More Posts by Sandro.

The injectors are simple spring-loaded check valves with nozzles; once fuel system pressure becomes high enough to overcome the counterspring, the injectors begin spraying.

When moving part is released, it should close very quickly. Low jetrnic side of the ignition coil. It doesn’t need to be long at all, even if you make the adjustment with the air cleaner in place 1. Bosch partnumber of the valve found on my 8. Starts right away Now: Fuel pressure test i http: