Well boys, I'm goin' a bit crazy. Pick up my new to me 92' 300E two weeks ago and it came with the classic top chain cover leak. Thought to myself, no sweat, I can fix that.

First attempt was made following http://www.peachparts.com/Wikka/M103TimingCoverReseal instructions to the letter. Still had the leak.

Second attempt was made using Mercedes sealant (loctite 5900) and instructions from the shop foreman at the local Merc dealership. Still have the leak.

I'm losing my sense of ha ha over this one.

I've gone over the proccess in my head a dozen times and can't think of what I've done incorrectly. Old sealant was removed, mating surfaces oil free and sqeaky clean (solvent and denatured alchohol), dab of sealant in the corners, horseshoe gasket properly seated with a drop of oil on the top surface, thin layer of sealant on the back of the cover, new radial seal for the camshaft......

Feeling like a spaz and I'm stumped!

Any old pros out there with the secret trick.

The chain cover is dry all the way around except for seepage (3 of 4 drops overnight) at the bottom passenger side corner. Could I have a head gasket leak at the front passenger corner? Is this a common issue on the M103?

The dealer's service guide states, "that if resealing the chain cover doesn't eliminate the leak... head gasket needs to be replaced"

Tell me it ain't so.

The car has a legitimate 56,000 miles and is, othewise, in immaculate shape. I could live without pulling the head. Any thoughts??