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93 Lumina engine leaks


7dark

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Hello everyone :) Over the next week or so I plan on doing a bunch of work on my Lumina and I had a question about a problem I've noticed.

 

 

I'm getting an oil leak(Least I think its oil) somewhere near my starter.

 

th_631d9674cde7-1.jpg

 

I have no idea where its coming from. There is some oil around the valve cover, but it looks older. Not quite as wet. I wipe it up and take it for a 20min drive and its back. Could it be coming from the intake manifold? That is my big concern. If that is a possibility how would I check?

 

Ty all for your time :D

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I'm getting an oil leak(Least I think its oil) somewhere near my starter.

 

I have no idea where its coming from. There is some oil around the valve cover, but it looks older. Not quite as wet. I wipe it up and take it for a 20min drive and its back. Could it be coming from the intake manifold?

Not from the intake manifold per se. Most likely from the oil pump drive O-ring near the intake manifold; or from gaskets between head/intake/valve cover.

 

My money's on the oil pump drive O ring. The oil drools downward, eventually dripping off the lower part of the engine. Often mimics a rear main seal leak.

 

This is what the oil pump drive looks like on a '93 3.4 DOHC. Many folks add the paper gasket.

 

Lumina_Oil_Pump_Drive_01.JPG

Edited by Schurkey
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