HELP!!! Oil leak
Thread Starter
Instructor
Joined: May 2015
Posts: 105
Likes: 5
From: Hayward California
HELP!!! Oil leak
2000 coup. 6 speed 165,000 miles Large oil leak rear of engine
Replaced upper and lower bat wing gasket leak still there
Replaced rear main seal (and clutch kit) leak still there
Replaced cam sensor O ring and oil pressure sending unit leak still there
Any ideas. HELP!!!
MVZ
Replaced upper and lower bat wing gasket leak still there
Replaced rear main seal (and clutch kit) leak still there
Replaced cam sensor O ring and oil pressure sending unit leak still there
Any ideas. HELP!!!
MVZ
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Check the rubber sections of the PCV system and there is also an oil level sensor as well. Have you looked at the valve cover gaskets? Problems with leaks like this is they can travel from on place to another so the leak may actually be elsewhere on the motor.
Safety Car
Joined: Dec 2010
Posts: 3,938
Likes: 498
From: Fords, NJ
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Thread Starter
Instructor
Joined: May 2015
Posts: 105
Likes: 5
From: Hayward California
Melting Slicks
Joined: Mar 2012
Posts: 2,800
Likes: 456
From: USA
I had a oil leak on the rear corners of the oil pan of my 2001 Coupe when I purchased it. The PO had the upper oil pan gasket replaced 3 times. Still had oil leak after all these repairs.
I removed the engine and disassembled it. The gaskets on the upper oil pan all looked like new and showed no problem that could be seen. I then began to look for reasons that would cause the upper oil pan to leak at the rear corners.
I checked for cracks and other obvious problems. I did not find any that jumped out at me. I then began to check the surface of the block and upper oil pan for any irregularities. The surface of the block was flat and needed no work.
The flange of the upper pan was warped across the rear section. It was high in the center and apparently causing to pan gasket to not seal at the rear corners. The leak was making a terrible mess on the exhaust pipe along with burning oil smell and the garage floor when parked.
I took the upper pan to my machine shop and they surfaced the upper flange and that stopped the oil leak.
A Chevrolet dealer replaced the gasket the first time and independent shops the last two times and still had the leak. I would check that surface to be sure it is not at fault.
Good luck finding your leak.
I removed the engine and disassembled it. The gaskets on the upper oil pan all looked like new and showed no problem that could be seen. I then began to look for reasons that would cause the upper oil pan to leak at the rear corners.
I checked for cracks and other obvious problems. I did not find any that jumped out at me. I then began to check the surface of the block and upper oil pan for any irregularities. The surface of the block was flat and needed no work.
The flange of the upper pan was warped across the rear section. It was high in the center and apparently causing to pan gasket to not seal at the rear corners. The leak was making a terrible mess on the exhaust pipe along with burning oil smell and the garage floor when parked.
I took the upper pan to my machine shop and they surfaced the upper flange and that stopped the oil leak.
A Chevrolet dealer replaced the gasket the first time and independent shops the last two times and still had the leak. I would check that surface to be sure it is not at fault.
Good luck finding your leak.