i need some help, i just rebuilt my motor and I got it tuned. Then 500 miles later smoke started coming out of the breather when the engine is under a load. I did a couple things,I compression tested it all 160 to 170 psi. I also got a new pcv and also realized there is a little shaft play on the turbo. I dont know if that's what's causing the smoking? No CELS.. what else could it be???

 

try to pinch your fuel line to your FPR while the cars running for a couple seconds. i had smoke comming out of my intake manifold after i put together a motor and it was cause of too much fuel.

 

too loose of gap on rings, cracked rings/ ringlands, bent valve... any of those could be it. Can you elaborate more on the setup (engine,turbo and breather setup too?)

 

b16a2 cp 9to1, eagle rods, t3/t4 turbo, block guard, s2 valve train, stock cams pcv is stock

 

if the pcv is stock, then where is the smoke comming from? did you put a gay filter on your valve cover? if that what your talking about?

 

who built the motor?

 

Sounds like some blowby of the rings, particularly if it is under load when it does it.

Take your oil cap off and rev the motor. You should not notice a ton of air being forced out. Place your palm over the oil fill and pull it off quickly a few times. If it feels like it is really building up pressure in there, and providing your beather isn't clogged and the PCV valve is working, it's coming by the rings.

This may not show up on a leakdown test, either. Ring flutter and other phenomenon that occur only when the engine is under load can't be predicted well with a leakdown test.

Bore, hone, clearances checked? Rings gapped and clocked? These things should not happen to a newly rebuilt motor if all was done correctly.

 

Leakdown test and get a better catchcan/breather setup