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Think my rear main seal is bad

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Old 08-31-2010, 12:25 PM
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Default Think my rear main seal is bad

Distributor isn't leaking and oil pan gasket is new and yet there's engine oil still dripping off the tranny.

Took it to my buddies shop to put on the rack and took out the cover that hides access to the rear of the engine/flex plate area an put the tranny is drive so it was spinning the tires an yet no oil can be seen dripping out from anywhere.

A bit confused as to why we don't see oil but I guess unless the engines under true load I've heard there are times you wont see it leak.

6.5 hours of labor on a 21 year old car that otherwise runs good.
Old 08-31-2010, 03:06 PM
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Default Re: Think my rear main seal is bad

Could be your tranny leaking. Or it could also be leaking out the back of the valve cover. Did you pull off the dizzy cap? The shaft seal likes to leak out of those. Could also be tranny fluid. Toss some UV dye in the oil and see where it shows up.
Old 08-31-2010, 04:26 PM
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Default Re: Think my rear main seal is bad

The inner and outer dissy seal was replaced and it's been double checked and no leakage.

It's def moter oil and and not auto tranny fluid.

I never thought I'd be in this situation with this car due to the tranny being replaced by the previous owner before I bought it.
Old 08-31-2010, 04:40 PM
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Default Re: Think my rear main seal is bad

Well, if you can unbolt the trans from the motor and try and crack them a little.
Old 08-31-2010, 05:23 PM
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Default Re: Think my rear main seal is bad

Originally Posted by chikin pickle
Well, if you can unbolt the trans from the motor and try and crack them a little.
Are you saying the seal can be replaced without fully removing the tranny?
Old 08-31-2010, 06:20 PM
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Default Re: Think my rear main seal is bad

no you have to remove the tranny, plus you probably won't see it leak heavily just by looking as they are generally a slow drip type leak
Old 08-31-2010, 07:56 PM
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Default Re: Think my rear main seal is bad

Us flatraters like to use the "seal in a can". It's a secret so don't tell anyone. We charge about 8 hours for replacing a rear main seal when in fact what we do is open up a can of "seal in a can" and pour it on top of your engine. All leaks are fixed in a matter of minutes. GRAAAAAVVVVYYYY!!!!!!
Old 08-31-2010, 08:02 PM
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Default Re: Think my rear main seal is bad

Originally Posted by phootbag
Us flatraters like to use the "seal in a can". It's a secret so don't tell anyone. We charge about 8 hours for replacing a rear main seal when in fact what we do is open up a can of "seal in a can" and pour it on top of your engine. All leaks are fixed in a matter of minutes. GRAAAAAVVVVYYYY!!!!!!
You mind me asking what brand "seal in a can"? Just curious.
Old 08-31-2010, 08:06 PM
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Default Re: Think my rear main seal is bad

Originally Posted by redbull-1
You mind me asking what brand "seal in a can"? Just curious.
It's made by Tampax.
Old 08-31-2010, 08:10 PM
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Default Re: Think my rear main seal is bad

Originally Posted by phootbag
It's made by Tampax.
Lol.

Just curious if there is a stop leak that really work. Depending on the severity of leaks (e.g., power steering, radiators, etc.) my own experience has never made me a believer in stop leaks that you pour in.
Old 08-31-2010, 08:14 PM
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Default Re: Think my rear main seal is bad

Agreed. The only "stop leak" that works is a new seal.
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