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Old 03-10-2003, 12:14 PM
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Zeus Zeus is offline
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Join Date: Feb 2000
Location: Canada
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Persistent oil leak - camshaft seal - 300E

Hey guys -

I'm at my wit's end. I have a persistent oil leak in my '89 300E M103 engine at the camshaft seal. It is definitely leaking at the camshaft seal - not the head gasket. Here's what I have done thus far:

1. Relaced all rubber seals and gaskets - including camshaft seal, valve cover seal, etc. Still leaks.
2. Replaced the aluminum timing chain cover piece (where the camshaft seal actually sits) and another new camshaft gasket. The aluminum piece was sealed with that Mercedes sealant recommended for this piece. My mechanic was specific about this and he did a very neat job sealing this. Still leaks.

My mechanic normally does excellent work and they did the second job mentioned above basically for free since they didn't fix the leak the first time around. I'm really stumped. Any ideas why it is still leaking? The leak is minor, but adds up over time. Not to mention having oil all over the front of the engine and inside the distributor cap!

2007 E550 4Matic - 61,000 Km - Iridium Silver, black leather, Sport package, Premium 2 package
2007 GL450 4Matic - 62,000 Km - Obsidian Black Metallic, black leather, all options
1998 E430 - sold
1989 300E - 333,000 Km - sold
1977 280E - sold
1971 250 - retired

"And a frign hat. They gave me a hat at the annual benefits meeting. I said. how does this benefit me. I dont have anything from the company.. So they gave me a hat." - TheDon

Last edited by Zeus; 03-10-2003 at 12:19 PM.
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