88 300e idle issues Please help
 

Hope someone out help can help me. I have an 88 300e that has a very rough idle. I was told that the car needs a fuel distributor. Injector Number 6 leading to the distributor seems to be bad. Moved the line to another place on same miss. Can a fuel distributor be cleaned to help this problem? Also can the ovp be contributing to the idle. In the mornings I found that the car backfires at the throttle plate and stumbles on take off. The car has new plugs and wires fuel filter. I'm scratching my head on this. PLEASE Help me figure this out:eek:

I.M.H.O.

If you have determined that one of the outlets of your F.D. definitely has a some sort of blockage.

You can try putting half a can of Seafoam thorough your system via the fuel tank. Might be fruitless

or

Depending on how much you value your car, buy a working one for relatively small dollars off the great auction site or buy a reconditioned F.D.

300e idle issues
 

Thanks. I guess I will try the seafoam first. Then look for a rebuilt fuel distibutor. Is replacing the fuel distributor a diy job?

Hey there!

I'm curious: "Injector number 6 leading to the distributor seems to be bad". By this do you mean that the injector line from the distributor to injector is clogged, or the number 6 fuel injector is bad? if this is the case, then you have a constant dead cylinder, which is very easy to diagnose on these engines. With the engine running, simply take off one spark plug wire at a time (and put it back) and see which one DOESN'T make a difference. this will give you the dead cylinder. If that dead cylinder has spark, it obviously is not getting fuel, which on the m103 is almost always a bad fuel injector. easy to replace, and much less expensive than the fuel distributor. Also, when you do the seafoam, use at least an entire can. I use it at every fill up and it works fantastic. As far as the fuel distributor goes, it doesn't really sound like there's anything wrong with yours, more like the injector/clogged line problem. And even though plenty of people on this forum take off their fuel distributors, it's not something I would attempt to do myself. There are a lot of fine tuning adjustments that you can get wrong if you don't know what you're doing BESIDES the remove/install.

Hope this helps, good luck and keep us posted

Hi Stormy.

I think the O.P. has been there and done all that as mentioned in a previous thread.

The F.D. is not a serious replacement job - it's logical.
Just remember that there is an thin O ring between the F.D. and AFM body - you will need a new one - very cheap part.