white smoke form oil catch can

[ottox]

hi all ive got a ej207 short block with ej20r heads that after the last track day has started blowing white smoke out of the oil catch can breather. it dose this all the time, when cold on start up and once at operating temp. it also blows white smoke out the exhaust on start up for about 2 seconds but doesn't blow any smoke under load. was just wondering if anyone on here can give me an idea what they think would be causing it? 

[loner]

head gasket maybe... or maybe nothing. do a compression test.

Edited December 12, 2016 by loner

[Dairusire]

Just to play devils advocate. You sure you're not confusing steam from condensation as smoke? Or is it definitely Smoke?

[ottox]

doesn't use any water and there's not water residue on the inside of the catch can. it also defiantly smells like smoke. if I take the oil filler cap off it blows the smoke out of there as well 

[Dairusire]

Just now, ottox said:

doesn't use any water and there's not water residue on the inside of the catch can. it also defiantly smells like smoke. if I take the oil filler cap off it blows the smoke out of there as well 

 

oosh, well if it doesn't knock now, take it off the road and get it to a mechanic asap. You might just save your motor. Regardless, it's probably a heads off job if they don't find something else.

[ottox]

I can do the work myself. I put the engine together about 50000kms ago and never had any issue like this before so wanted some opinions as to what people may think it is before I pull it apart. I drove for about another 20min on the track after I noticed it and then drove it home and it hasn't gotten worse.

[SpeedySub]

A quick google found these, might be relevant or at least point you in the right direction:

 

http://www.rs25.com/forums/f13/t195491-white-smoke-coming-out-oil-filler-dipstick.html

http://forums.nasioc.com/forums/showthread.php?t=1700921

 

Looks like everyone in the above links is saying either ringlands gone or head gaskets. Or could be as simple as a stuck PCV?

Definitely get a compression test done.

[ottox]

yea im going to do a compression test on my next day off. I've already removed the pcv as had it stick open on me before racing around the pukekohe track. I was thinking rings but would have thought there would be more exhaust smoke and oil usage. but from reading those threads its defiantly pointing strongly at rings.