Oil leak

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Oct 5, 2013 | 03:17 PM

red69coupe

Thread Starter

Intermediate

Joined: Jan 2006

Posts: 27

Likes: 0

From: Roanoke Virginia

Oil leak

Noticed under the 92 a couple drops of oil in the garage. Only had it a couple months could have been building up. Only 26K miles but 21 years old. Any thoughts on what to check first.

Thanks

Oct 5, 2013 | 07:22 PM

STL94LT1

Race Director

Joined: Jan 2002

Posts: 12,261

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From: O'Fallon Missouri

Rear of intake manifold on LT1's is a common oil leak source.

Oct 6, 2013 | 12:34 AM

TorchTarga94

Melting Slicks

Joined: Jul 2011

Posts: 2,605

Likes: 202

From: Trinity FL

^This.

Crank seal, opti seal, and water pump seal are also prominent.

Oct 6, 2013 | 07:40 AM

AirForceOne!

Drifting

Joined: Jul 2012

Posts: 1,796

Likes: 14

From: Nampa Idaho

Could also be your oil pan gasket or even your valve cover gaskets too!

Oct 6, 2013 | 11:17 AM

kimmer

Le Mans Master

Joined: Jul 2009

Posts: 6,381

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From: SF bay area C.A.

C4 of the Year Finalist

Best way to find out is clean everything up first and then look for it, it beats guessing.

Oct 8, 2013 | 01:46 PM

LannyL81

Melting Slicks

Joined: Nov 2005

Posts: 3,323

Likes: 142

From: Green Valley Arizona

Oil filter adapter bolts. Seems the FelPro gasket is a bit thinner than stock so the two bolts bottom out. I had to put RTV on the bolt threads to get them to stop dripping.

Although opti spark seal and water pump seals are the most likely if never changed. Had to change these as well. Did these first, and then found the oil filter adapter bolts.

Oct 29, 2013 | 09:06 AM

zannic

Intermediate

Joined: Oct 2012

Posts: 40

Likes: 1

From: Virginia

oil leak

If it is leaking out of the rear of the intake, would you expect to see the oil up forward on the cross member? Got a buddy on the forum who's '95 just started leaking up front. Looks like the front of the oil pan (or timing cover) leak to me. BTW, book says "4.5 qts" but local shop says "5 qts" oil. What say you C4 enthusiast? If it is over by 1/2, that could cause a leak as well, correct? Thanks!

Quote:

Originally Posted by STL94LT1

Rear of intake manifold on LT1's is a common oil leak source.