new headgasket, still smoking

[2GTsi311]

Replaced my head gasket about 3 months ago, never had white smoke with old one...now im seeing a cloud of white smoke 3 seconds after startup and after revving at idle. Any ideas? thanks

 

[95gstnj]

hey, did you ever find a cure for the smoke, i have the same problem. white smoke after revving, but really none while driving, just after revving. say, im stopped at a light, i rev it, then as the rpm/s drop back down, the white smoke appears ( even only if i rev it to 2k ish). compression is fine, no oil in water/ vice-versa. it does seem to be eating some water up though. ( well, obviously b/c of the white smoke) any help would be appreciated

 

[4ged4G63]

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[ViChives]

I'm having the same problem. If I let it idle too long it'll start smoking till I drive it even if it reaches operating temperature just sitting there. If I drive the car when I first start it, it doesn't smoke. It'll smoke a little if it sits for a couple of hours but goes away pretty fast. Gets, worse the colder it is outside.

I replaced the headgasket and piston rings. I was going to replace my valve stem seals. Since that didn't work for you I'm going to see is if removing my coolant lines from the turbo makes a difference. I read another post that if the oil feed line came straight from the oil filter without some restrictor in place it could put too much pressure can cause smoke.

I'm going to check the coolant lines tomorrow and try some way to restrict some oil follow to the turbo maybe with a smaller hose.

 

[huafist]

Just do a leakdown test and figure out where it's coming from.
You can run a compression test and see if it's your rings or not - if you drop a capful of oil in the spark plug hole and your compression numbers go up, your rings are allowing blow-by. If not, then it's something else.

Piston rings usually smoke when you get on the car, or at idle.
Valve Stem seals typically only smoke AFTER you've been on the car, while the engine RPMs are returning to idle (ie, in between shifts).
Valve Guides are doubtful.
Turbo should smoke during acceleration.

Keep in mind this kind of smoke is oil, so it will have a slight bluish tint to it (sometimes it's hard to tell).

If you're POSITIVE it's white, it's coolant. When you replaced your head, did you follow the proper sequence torquing the headbolts down? Have the head/block checked for trueness? Metal HG or no? Metal Head Gaskets are much more picky about trueness than any other.

 

[scotthidley]

Pull the i/c pipe off, wipe it clean. Drive it for a few days, and see if there's oil on it. My 14b pretty much started smoking at idle, it rarely did it under load. Then it started to do it under load, which is when I replaced it. Shaft play was always normal. Checking the i/c pipes is very easy.

4ged4g63, have you ever tried swapping the turbo?

 

[river]

valve stem seals.

they will smoke at startup and cause the problems you are describing. a leaking headgasket would smoke all the time, not just after startup. they may even smoke at idle. i had a really wierd case of this, i didnt replace anything...just kind of drove the car for a while because it wasnt something happening all the time. sometimes i would get white smoke after hard accel. and sometimes i wouldnt. so one day i was doing some work on my turbo intake and noticed that the plug for the valve cover breather hose had been taped off by the previous owner! blocking off a valve cover breather hose like that has also been known to cause white smoke, so i fixed that, installed a catch can and have not seen white smoke since.

 

[river]

if a HG was leaking most likely you could have somebody follow you down the road and under any load they would see white smoke, maybe even just a little, coming out of your exhaust from my past experiences.

 

[4ged4G63]

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[4ged4G63]

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