LT1 oil leak problem
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LT1 oil leak problem Hello all, so I've got a 1995 T/A with 67k and a serious puddle under the back side of the motor, about 10inch in diameter every time I park in my garage. The car only starts to leak when running and drips off of the oil pan and bell housing. It has been getting steadily worse and I cant for the life of me solve the problem.
In the past few months I've replaced the intake manifold seals, valve cover gaskets, and the rear main seal. Still the puddle is not getting any smaller. The only other possible source that I can think of causing a leak this size would be the oil pan gasket, which leads me to my question. Is it normal for an oil pan gasket to leak when the car is running and not while parked? I have no experience with this but i've thought that if there were a break in the pan gasket it would leak even while sitting.
I would love any opinions weather they be related to the pan gasket or another possible source.
In the past few months I've replaced the intake manifold seals, valve cover gaskets, and the rear main seal. Still the puddle is not getting any smaller. The only other possible source that I can think of causing a leak this size would be the oil pan gasket, which leads me to my question. Is it normal for an oil pan gasket to leak when the car is running and not while parked? I have no experience with this but i've thought that if there were a break in the pan gasket it would leak even while sitting.
I would love any opinions weather they be related to the pan gasket or another possible source.
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My front main seal leaked and as your driving down the road it will blow oil back everywhere else. Could be that. OR also check your trans pan bolts and see if any are missing because when I first purchased my car it had the same puddle you are describing, it had 3 loose trans pan bolts and one missing, after fixing that and replacing the front main seal, it was gone after a few days of driving.
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Thanks for the quick replies! I checked the oil pressure sensor when I had the intake manifold off and it was fine, no leaks. The front of the motor is surprisingly dry so I don't think the front main has started leaking yet, and i'd check the trans pan but its a t56.
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rear of motor dripping down often is intake manifold (rear) leak...but you say you fixed that and then valve covers would be the next..which you fixed...and then the RMS . Holly repair batman..the RMS is a big job
I would steam the motor so it is clean, put some oil dye in and get a blacklight and find wtf the leak is before you swap anymore parts
pan leak, yeah but not a common leak. The most common is rear intake. run your hand back there...any oil??
I would steam the motor so it is clean, put some oil dye in and get a blacklight and find wtf the leak is before you swap anymore parts
pan leak, yeah but not a common leak. The most common is rear intake. run your hand back there...any oil??
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From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
What seals did you change in the intake? Are you referring to replacing the intake manifold gaskets, which would also necessitate the application of RTV at the front and rear of the intake where it sits on the block? I would make doubly sure that the rear of the intake is not leaking. It's a very common leak. You could simply run your hand along the back part of the engine where the intake meets the block.
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I actually just picked up some uv dye yesterday, I'll try and post pictures of the results.
I used the Fel-Pro MS95580 set and Permatex ultra copper, every time I run my fingers on the block below the rtv on the back they come back with hardly even a shine of oil.
After performing some arm yoga I managed to film a clip of the back of the manifold with my phone, it may look like like there's oil on the block but I believe that's just the paint finish, because like I said it barely even gives my finger a shine.
https://www.youtube.com/watch?v=Rxy6...ature=youtu.be
And some pictures to go with
What seals did you change in the intake? Are you referring to replacing the intake manifold gaskets, which would also necessitate the application of RTV at the front and rear of the intake where it sits on the block? I would make doubly sure that the rear of the intake is not leaking. It's a very common leak. You could simply run your hand along the back part of the engine where the intake meets the block.
After performing some arm yoga I managed to film a clip of the back of the manifold with my phone, it may look like like there's oil on the block but I believe that's just the paint finish, because like I said it barely even gives my finger a shine.
https://www.youtube.com/watch?v=Rxy6...ature=youtu.be
And some pictures to go with
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Verdad Gallardo TECH Fanatic
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From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
I used the Fel-Pro MS95580 set and Permatex ultra copper, every time I run my fingers on the block below the rtv on the back they come back with hardly even a shine of oil.
After performing some arm yoga I managed to film a clip of the back of the manifold with my phone, it may look like like there's oil on the block but I believe that's just the paint finish, because like I said it barely even gives my finger a shine.
https://www.youtube.com/watch?v=Rxy6...ature=youtu.be
And some pictures to go with
After performing some arm yoga I managed to film a clip of the back of the manifold with my phone, it may look like like there's oil on the block but I believe that's just the paint finish, because like I said it barely even gives my finger a shine.
https://www.youtube.com/watch?v=Rxy6...ature=youtu.be
And some pictures to go with
