I have eliminated the fuel distributor plunger seal, the pressure regulator and the cold start valve as the reason gas is pooling in my intake manifold and subsequently causing poor mileage. Where else can it be coming from? There are no external leaks either. The gas inside the air chamber under the airlow plate looks like it's a little oil also.

may be the model and year may help.

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J.H.
'86 300E

I thought everyone knew that I had an 89 300e, W124.030, with the 103.983. And, I'm expanding my search to include knowledgable persons whether named Steve or not!!