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View Full Version : 1995 mercedes sl500 running rich



kop
28th September, 2012, 11:28 PM
I have a sl as above which is running very rich. Stinks of fuel and hesitates and misses. Plugs have been changed, maf changed and dizzy cap changed but still the same. Any advise would be appreciated.

Rocinante
29th September, 2012, 04:22 PM
Have you checked the fuel pressure? Is the fuel pressure regulator leaking fuel into the intake through its vacuum hose? Are the O2 sensors working? Are the coils producing enough spark?

MV auto
29th September, 2012, 04:27 PM
you changed a lot of thing, but did you test something? a lot more explanation would be needed if you want us to help you.
what test did you do, what you didn't?
what scanner do you use?
what are the fault code?
on a 95' SL500, it can be a pain in the ass that kind of diagnosis, so you should really work properly,step by step, using the same diagnosis method as in any car.

waiting more detail before throwing out all the possibility of a rich condition.

regards