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 KE3 manual will not apply. Bosch Digifant engine management system Jetronic Motronic. Skip to main content.

The fuel distributor is mounted atop a control vane through which all intake air must pass, and the system works by varying fuel volume supplied to the injectors based on the angle of the air vane in the air flow meterwhich in turn is determined by the volume of air passing the vane, and by the control pressure.

When injectors are out, carefully unbolt all jetroinc from injection unit, so that no washers will be lost, and reattach them in a way that lines would go over right wing and injectors would be outside engine compartment – of course, first put some rag over the wing.

Last edited by Keso; at With 4 pot engines and NF1 it’s rather easy – all that has to be done is to undo me3 holders and pull them out.

This is a simplified and more modern variant of L-Jetronic.

EHA valve bosch CIS KE3-Jetronic Injection | FerrariChat – The world’s largest Ferrari community

Originally Posted by Keso Most purchases from business sellers are protected by the Consumer Contract Regulations which give you the right to cancel the purchase within 14 days after the day you receive the item. The engine control unit ECU may be either analog or digital, and the system may or may not have closed-loop lambda control.


If jstronic one is acceptable, put it on, turn the engine on, get the necessary idle speed and turn potentiometer until 0,67v is reached.

L-Jetronic used custom-designed integrated circuitsresulting in a simpler and more reliable engine control unit ECU than the D-Jetronic’s. First locate the X11 diagnostic connector:. Initially designed for the US market. Adjustment fixed that problem.

Ferrari part number 95990867 KE3 JETRONIC BOOK

Articles containing German-language text All articles with unsourced statements Articles with unsourced statements from May Also make sure you have the right one there. The lack of processing power and the unavailability of solid-state sensors meant that the vacuum sensor was a rather expensive precision instrument, rather like a barometerwith brass bellows inside to measure the manifold pressure.

Although Mercedes requires that it be removed and discarded, and after the adjustments be replaced by a new one, with care it can be re-used. Useful for testing oxygen sensor and also can be used to test MAF potentiometer better than multimeter can. If you have an oscilloscope to measure this timing, fine.

Upper path is the one that provides variable resistance, lower path is solely for contact. A jetronlc of Except if the price is really expensive, you should buy the right one as it’s already set up.

Voltage gan also be measured directly by prying off connector boot. Your name or email address: I can find the pressure test, but nothing on the system as such.

Sinds it is a horror story to replace this thing on a 8. The mondial system is spot on That’s the one. The system was last used with a Lucas designed timing mechanism and Lucas labels super-imposed on some components on the Jaguar V12 engine XJ12 and XJ-S from until Now – I have maybe burned something electrical and the start valves are completely out of operation.

The i and systems are not the same. This is actually the positive side of the ignition coil. The old screws were 12mm long, but 10mm is still plenty of thread length. The system was developed to comply with U. I couldn’t find a replacement relay – so drove with a wire shortcutting the system for a while, basically just letting the fuel pump run as soon as the key was turned.


For additional information, see the Global Shipping Programme terms and conditions – opens in a new window or tab. Connect oscilloscope between ground and oxygen sensor connector and adjust it to read zero. 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 series motors. Ensure that there is no tension or pre-loading of the connecting rod which runs towards the front of the engine from the curved slot in the variable-fulcrum lever.

A common issue is the cold start injector leaking, throwing off the mixture all the time. So – I have my questions answered: Should last about 60k miles. Learn more – opens in new window or tab. You can test it with screwdriver – it should move in a direction that first closes that gap and then opens gap on another side.

Jul 16, 6, Hagerstown, Md Full Name: Add to Watch list. It has a round screw-cap. I actually experienced similar problem on my NG – it had no problems until I changed throttle body to newer one that has no idle screw, when I found out my MAF potentiometer for some reason is reading too much.

If the mixture is rich it will read above 0. This lambda signal is not a replica of the voltage from the oxygen sensor. As per L-Jetronic, a vane-type airflow sensor is used. See other items More