Mechanics

I CAN'T FIGURE OUT WHAT'S CAUSING A MAJOR OIL LEAK I JUST REPLACE THE REAR MAIN SEAL AND IT'S STILL LEAKING?

1998 Saturn Astra • 240,000 miles

It's leaking oil around my transfercase well pouring. I've had some say it could be my throw out bearing bad causing it to leak I'm not reslly sure and would like to know my possible causes
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Cwebb
November 12, 2011.



It's a SL1

Tiny
Cwebb
Nov 12, 2011.
So is it leaking oil or transmission fluid?Because there should be transmission fluid in your manual transmission.

Saturntech9
Nov 12, 2011.
It's leaking motor oil. I can take a pry bar and push in on my crank shaft pully it will move in about 1/4 inch while holding that in, the leak slows down to a bear minimum but once I take pressure off the crank it starts pouring oil agin

Tiny
Cwebb
Nov 13, 2011.
So its coming from the rear main area correct?A 1/4" crank play isnt too bad. What did you use to install the rear main seal?

Saturntech9
Nov 13, 2011.
Yes an I had a local mechanic replace my rear main and clutch but come to find out guys that work for them are half assers like most if there was something's else going on in that area ud think they shoulda noticed

Tiny
Cwebb
Nov 13, 2011.
They probably didnt use the correct tool to install the rear main thats why its leaking.

Saturntech9
Nov 13, 2011.
Ok but I'm still lost why dose the leak stop when I pry in on my crankshaft pully seems to me if the seal was bad it would still leak not stop

Tiny
Cwebb
Nov 13, 2011.
If the seal wasnt in the correct depth into the rear main carrier that would explain it.

Saturntech9
Nov 13, 2011.
I would also like to kno if my throw out bearing or release bearing would have anything to do with taken some of that slack up or possibly stoping my leak?

Tiny
Cwebb
Nov 13, 2011.
The throw out bearing has nothing to do with the play in the crank or the leak. The play would be the play in the crankshaft main bearings.I have seen crankshafts with more end play then yours and the rear main wasnt leaking. There is something most likely wrong with rear main seal. What did the shop say about the oil still leaking.

Saturntech9
Nov 13, 2011.