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Honda Accord (1990 - 2002) Includes 1997 - 1999 Acura CL

Rear Main Seal Leak

Old 05-03-2011, 05:14 PM
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Default Rear Main Seal Leak

Is a car still drivable with a rear main seal leak? Of course I would keep an eye on the oil but I may need to drive the car around temporarily like that until I can fix it.
Old 05-03-2011, 08:32 PM
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Default Re: Rear Main Seal Leak

Most people don't even bother fixing them, they just make sure to carry around extra oil. It's not going to blow out like some other seals.
Old 05-04-2011, 08:11 AM
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Default Re: Rear Main Seal Leak

and thats oil for the motor right? not the tranny
Old 05-04-2011, 08:28 AM
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Default Re: Rear Main Seal Leak

Correct, the rear main seal for the motor oil. It's located at the end of the crankshaft where it bolts onto the flywheel.

It's a bitch to get to, but it's easy as cake to replace once you're in there. Plus the main seal is like $3.00 from any auto parts store haha.

You can drive it while it leaks but eventually it'll leak more and more until you're pouring a quart of oil in the morning, on your lunch break, and after you leave work. Speaking from first hand experience, of course.
Old 05-04-2011, 09:35 AM
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Default Re: Rear Main Seal Leak

basically just a matter of getting the transmission out of the way to get to it huh? thanks a lot. this really helps. i am actually trying to pick this car up today and drive it home but the guy selling it told me he wouldn't recommend me driving it home because of the leak.
Old 05-04-2011, 12:10 PM
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Default Re: Rear Main Seal Leak

He just wants you to pay to have it fixed 'cause it's a lot. It sits in the middle of the engine and transmission. When you take off the transmission it's attached to the engine.
Old 05-04-2011, 12:45 PM
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Default Re: Rear Main Seal Leak

Originally Posted by CARMA_626
Correct, the rear main seal for the motor oil. It's located at the end of the crankshaft where it bolts onto the flywheel.

It's a bitch to get to, but it's easy as cake to replace once you're in there. Plus the main seal is like $3.00 from any auto parts store haha.

You can drive it while it leaks but eventually it'll leak more and more until you're pouring a quart of oil in the morning, on your lunch break, and after you leave work. Speaking from first hand experience, of course.
Haha true. My old Accords F22 was leaking at the rear main. I was saving up to swap in an H22 so did not bother fixing the seal. By the time I installed my H22, I was leaving pools of oil wherever I parked.
Old 05-05-2011, 10:04 AM
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Default Re: Rear Main Seal Leak

yea well i went to check the car out yesterday. guy saids it leaks oil from the rear main seal. i get there, start it and knock knock knock followed by a huge puddle of oil on the ground. only meant one thing, rod knock...tried to locate the hole in the block (it definitely had to have one the way the oil was coming out) and i couldnt see anything but needless to say i didnt get the car. i was pretty upset tho. now im looking at a 88 ef just to get around until i can get another cb7
Old 05-05-2011, 10:22 PM
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Default Re: Rear Main Seal Leak

What the entire story? What was this guy working on? Did it somehow "get worse" after this guy worked on your car?
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