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View Full Version : Early W116 (1973 - 1976 S Class) D-Jet Problem!!


John Hubertz
05-04-2006, 10:12 PM
Hey all,

A member of my w116 group (450SE, SEL, 6.9, 280SE etc) has a problem with an early D-Jet car.

It happens to be a Euro 350SE, but it is a standard D-jet electronic injection setup.... He's having fits.

PLEASE if anyone can think of a similar problem with their 450 or 350SL (through 1986) could you post a reply?

Here's the issue:

the car refuses to start some of the time. When it does that, it sounds like nothing firing at all, when it eventually catches, it feels like no fuel - I have to pump the gas like some bloody old carburetted Lada to get it going and it dies so very, very reluctantly with a belch of smoke before finally catching on. The fuel filter is new, the fuel pressure regulator is new, all pipes and clamps are new/cleaned, checked, the cold start injector does its job...

I recently drove this car 250km without the slightest hint of a miss. When cold it either starts nstantly or not at all. When hot, it tends NOT to start but it might.

He's tried a different (almost new) fuel pump from an identical car... for a long while it wouldn't start at all then one day he tried retarding the distributor and it started and seemed fixed....for a couple of days.

He's located in Paris. I've subscribed to the thread, so you can just post your ideas here... please help! :confused:

wbain
05-05-2006, 12:12 AM
Here are some links to the service manuals:

http://www.w116.org/


These are for USA models but should be similar for the 350SE:

http://handbook.w116.org/matrix6.htm

Section 07.4:

http://handbook.w116.org/engine_73.htm

electronic FI.