Reply With QuoteHow about a wet and dry compression test, do a dry test first, then if you add oil and the compression raises, that would give you a clue if it's the rings or not.
2jz blowing blue smoke
My 2jz has had the usual jz valve stem seal problem since i got it. It would blow a small amount of blue/oil smoke on cold start up. But now it seems to puff very small amounts through out the rev rage, especially when you back off the throttle. I'm concered it could be the rings. Can't be the turbo cos it's only done about 1000km's.
Anyone here experianced similar amounts of smoke from a jz motor? Whats the best way to test if the rings are buggered?
1990 SW20 MR2 turbo Gen III 3S-GTE conversion, 3" exhaust = 264.9rwhp
1985 JZA61 2JZ-GTE + TO4Z = 442.1rwhp @ 18psi
1991 JZA70 Limited 2JZ-GTE vvti GTX30/76r
1994 GZX90 Mark II 1GZ-FE V12
1980 MA45 Undergoing Restoration
Re: 2jz blowing blue smoke
How about a wet and dry compression test, do a dry test first, then if you add oil and the compression raises, that would give you a clue if it's the rings or not.
Re: 2jz blowing blue smoke
stem seals gone hard? get them changed and it should be all good.
Originally Posted by WHITCHY
Re: 2jz blowing blue smoke
Back off the throttle = high vac condition --> likely to be VSS....
My thoughts. You know they are average anyway so replace them and see if problem persists
Cheers
Wilbo
Re: 2jz blowing blue smoke
Cheers for the help guys. I'll be replacing the stem seals soon, along with cams and valve springs.
1990 SW20 MR2 turbo Gen III 3S-GTE conversion, 3" exhaust = 264.9rwhp
1985 JZA61 2JZ-GTE + TO4Z = 442.1rwhp @ 18psi
1991 JZA70 Limited 2JZ-GTE vvti GTX30/76r
1994 GZX90 Mark II 1GZ-FE V12
1980 MA45 Undergoing Restoration
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