Tips and Tricks, Rear Main Seal Leak and PCV Replacement

The Nissan 300ZX (Z32) general community discussion forum
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gpelite
Posts: 365
Joined: Tue Aug 09, 2005 2:22 pm
Car: 1990 300zx TT

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Ok so I am about to drop my transmission and replace the rear main seal but some guys are telling me to replace PCV hoses to relieve crank case pressure and see if that helps. Supposedly this method and some gasket sealing additive has been known to help some Z guys out from the oil pushing past the seals and save them a 600 dollar repair bill for the 17.00 seal.

Question is which hoses, where are they, and what the the part numbers?

pics would be appreciated otherwise give me what advice you could


Canyoncarver
Posts: 186
Joined: Sat Dec 06, 2003 10:49 am
Car: '93 300zx

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At one point I had relatively new pcv's. after a track day and dumping oil out thru the pcv's, I started having a nasty rear main seal leak after hard runs up the canyons. It would be dripping oil rather quickly.

Replacing the pcv's virtually eliminated the rms leak. A year has gone by and the seal is beginning to leak again and I suspect that the sealis bad. With 142k on the odo, I am still putting off the replacement until the clutch is closer to death.

So, in conclusion, If your pcv's are clogged, they can cause the rms to leak. If the seals are original, they'll need replacing soon anyways. Ideally, you want to do it when the clutch needs to be replaced.

I did a little tips-n-tricks write-up on another site for the pcv's. Sadly the pics got lost tho. The best piece of advice I can give is to remove the d/s intake tube and reach from there back to the hose when trying to remove it.

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Zak427
Posts: 305
Joined: Tue Jul 18, 2006 3:33 pm
Car: 93 2+2 Twin Turbo

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pull the battery out and the brake master cylinder. it will make it a.lot easier

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gpelite
Posts: 365
Joined: Tue Aug 09, 2005 2:22 pm
Car: 1990 300zx TT

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do you at least have the write up page?

worst comes to worst I will have a shop do the pcv... Where I store my Z doesn't let me work on it like I used to. And I mean it can't be more than the 500 labor charge for a rms replacement...


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