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2006 Buick LaCrosse Question: Oil leak



, 3.6L V6, Newark, DE, May 14, 2011, 12:48

I have an oil leak behind the upper pully for the cam shaft can you tell me what could be the cause.

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, May 14, 2011, 13:57

    Your engine uses a timing chain, there isn't a camshaft seal per say at the camshaft sprocket side of the engine. Oil seals fail over time and get brittle or the lip of the seal just wears. A build up of crankcase pressure due to a restricted PCV valve could cause seal failure but most likely just a fatigued seal or gasket is causing your leak.

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    , May 14, 2011, 23:24

    Can you tell me about how much it will cost for meto have it fixed

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