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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 05-15-2006, 10:23 PM
bci101tractors bci101tractors is offline
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Smile 1988 f150 rear main seal oil leak?

Hi,
I have an 1988 f150 4x4 w/ 300 6 cyl. with a nasty oil leak. I took the truck to a local shop and was told it was the oil pan gasket. $350 later I still have the same leak!
I pulled the tranny, clutch and flywheel out and am wanting to fix this myself, however I want to mke sure I fixed it before I put it all back together. A friend of mine told me that if the rear main is leaking, the engine side of the flywheel will be coated with oil, it had some grease and oil on it, but I wouldn't say a lot? The plate between bell housing and engine is covered with oil on both sides.
The truck leaks when engine is running and really comes out when I go up a steep hill.
Any help would be greatly appreciated!! Thanks Steve
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Old 05-15-2006, 11:38 PM
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chrono4 chrono4 is offline
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have you checked the valve cover gasket? thats what it sounds like to me, wash it really good with degreaser and run it and see where it comes from.
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Old 05-16-2006, 12:22 AM
bci101tractors bci101tractors is offline
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Thanks Chrono4, I didn't mention that but I did take it in one other time and they replaced valve cover gasket, and still the leak, this is why Ive decided to do it myself, I will double check the valve cover and make sure it looks OK Thanks Again
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Old 05-16-2006, 02:02 PM
87RUCK 87RUCK is offline
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Have you checked to see if the valve cover bolts are tight? Some times the bolts will back out a little after the valve covers have been replaced.

robert
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Old 05-16-2006, 07:12 PM
bci101tractors bci101tractors is offline
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Thamks 87ruck
I will check tonite
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Old 05-16-2006, 09:59 PM
bci101tractors bci101tractors is offline
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Hi again,
Tonite I cleaned up engine good put on b.h. flywheel starter and started the truck up, let it run for a few minutes and couldn't find a leak anywhere, NOT what I was expecting Do think I should just replace oil pan gasket rear seal and put tranny back together?? Please Help!
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Old 05-16-2006, 09:59 PM
 
 
 
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