Ahhh Me Blue Smoke

[r32pat]

So just chasing some advice.

R32 running RB25DET

T04E highmounted.

Car started burning oil.

Compression tested all 6 read around 160

Cleaned PCV still no luck.

tried thicker oil.

Assumed it was the turbo so i had it rebuilt.

Refitted all ok. Car still burns oil and is getting worse.

Disconnected breathers and started engine.

Intake side has no air movement.

However exhaust breather chuffs like a steam train.

Does this sound like valve stem seals to anyone or have a smashed something ?

Car burns oil pretty much from cold driving. more so under boost.

Any ideas ?

[TiTAN]

are the breathers sucking or blowing at idle? one way valve disconnected/blocked when testing?

[r32pat]

are the breathers sucking or blowing at idle? one way valve disconnected/blocked when testing?

one way valve disconnected. intake no movement at all. exhaust side blowing at idle.

Also car still pulls hard no miss firing etc etc

Edited February 8, 2010 by r32pat

[MBS206]

sounds like the cross over may be blocked if the intake side seems like "nothing" and outlet is pumping it out...

[r32pat]

sounds like the cross over may be blocked if the intake side seems like "nothing" and outlet is pumping it out...

this is with all breathers disconnected and the exhaust side just venting at idle. so in this case the cross over pipe between both rockers isnt attached.

Note this was only for testing of course.

[MBS206]

this is with all breathers disconnected and the exhaust side just venting at idle. so in this case the cross over pipe between both rockers isnt attached.

Note this was only for testing of course.

PCV connected or disconnected?

[r32pat]

PCV connected or disconnected?

tried both under driving conditions. no change

Its been bugging me for months. I have a R34 4 door daily and been busy at work so i havent been able to play with my r32 for a while.

So i really appreicate the responses. Its been doing my head in lol.

Edited February 8, 2010 by r32pat

[MBS206]

tried both under driving conditions. no change

Its been bugging me for months. I have a R34 4 door daily and been busy at work so i havent been able to play with my r32 for a while.

So i really appreicate the responses. Its been doing my head in lol.

I'm talking during your test.

[r32pat]

I'm talking during your test.

Yep tried both during my tests at idle.

i have tried everything you guys have suggested so far in the past with no luck.

I have another engine lined up worse case senario. But who doesnt wanna save some money if its something like stem seals?? lol

Edited February 8, 2010 by r32pat

[SECURITY]

stem seals would cause you to blow smoke under deceleration as well as off idle. it might be something like worn valve guides, does the car have a lumpy idle or irratic vacuum?

[R34GTFOUR]

Or it could just have clapped out oil rings. Compression rings might still be ok hence the compression being fine, but if the oil rings are fingered it will blow smoke like a chimney. Blue generally = rings.

[R.3.2.G.T.R]

do a leakdown test

[r32pat]

For all you interested.

Motors out. Melted number 6 lol.

ahh well already have new motor ready to rock cheers for everyones advice.