Started from couple of days ago, whenever I accelerate, a cloud of white, smelly smoke came out of the pipes of my 88 300E (110K). I took out all the spark plugs and one of them is oily and blackened. I replaced all of them but the problem still exist.

Any idea? Could the spark plug wires be the culprit?

Thanks for any input.

Eric

Don't worry it is most likley to be the valve stem seals. Not a big job to change. j.depledge@virgin.net

I have seen a big problem with the head gaskets on this particular model. It could be that you are in need of a valve job as well. I would have this checked out by a competent technician.

Benzmac

IF THE SMOKE FROM THE EXHAUST HAS A "SWEET"
SMELL, THE HEAD GASKET IS PROBALY LEAKING.
YOU SHOULD HAVE SOMEONE PROPERLY TEST THE
COOLING SYSTEM & PERFORM A "CYLINDER LEAK TEST".

I agree with the moderator, I have always been told white smoke = a blown head gasket, meaning you are burning coolant.

And speaking of that, how is the coolant level?