White Smoke!

[Daboss]

Hey forum will try to keep this as short as possible. Have a 95 r33 gtst series 2 with stock turbo on it. turbo was on 14psi could have spiked to more and now I have white smoke out exhaust. Motor has forged pistons and triple layer metal head gasket 1.3mm. Thought it was turbo so replaced that and in replacing it saw loads of oil around the old turbo's turbine. Did a compression test got 140 135 140 140 140 135 1 thro 6 respectively. No oil in the coolant, no coolant in the oil, no bubbles in the radiator and no oil in the catch can I hooked up. Have the catch can hooked up venting to atmo. Whats strange to me is on idle there is some smoke but not much as I rev it there is more smoke and bellows of smoke when I idle with ac on and no revving, with ac off there is some smoke but not as much as with it on. I am lost as I have no really negative test results but all the smoke to show signs of a blown motor. Can anyone shed some light on this for me? Thank You. Noew I know there should be oil in the dump/front pipe as it was evident when I took the turbo off so that has to burn off but why the bellows of smoke only when I turn the ac on?

[turael]

and you say you replaced your turbo? does the smoke go away after a bit? and silly question but, are you certain its smoke and not condensation

[TiTAN]

have you connected the car up to a wideband O2 sensor since you changed the turbo?

[No Crust Racing]

Just wondering if there's still oil through the inlet system that's being burned off. If there was a lot of oil in the turbo then there should have been plenty of oil in the catch and/or cooler if it was oil seals from the turbo.

Where was the oil in the turbo? On the compresser wheel side or the exhust wheel side? I'd be thinking the hot side (exhaust) would be too hot to leave much trace of oil unless it was just drinking it like mad.

Keep an eye on your oil levels during your testing in case it is chewing through it. You might want to pull the inlet piping to and from the turbo/cooler/plenum and clean it all out. My silvia had oil coming out of the cooler core after enough track days and blow by (it's an old CA). I put a catch can in, made up an internal baffle for it and that sorted it.

If your catch can isn't baffled it won't be doing much for you either but if it was loads of blow by the atmo filter would be drenched.

More inspection/testing is required.

Good luck and keep us posted so others can benefit from your findings

Cheers

Edited October 12, 2009 by ActionDan

[Daboss]

Ok answering all the questions I could remember, yes I am sure it is smoke and not condensation doesn't go away after awhile, I do have a wideband O2 sensor and it reads high 13's to high 14's at idle and the oil was on both the compressor and turbine side very very thick, I only installed the catch can after the problem and so far no oil. Had the intake piping and cooler off and there was a lot of oil in the cooler and piping I cleaned that out already. Didn't clean out the dump/front pipe before reinstalling after the change of turbo and as said at idle no ac no revving smoke is barley noticeable, with revving it is more noticeable and with ac on no revving there is bellows of white smoke. Also my heater core was leaking coolant in the car as well also have that bypassed and fixed, just thought I would ad that in as something else that happened when I suspected that the turbo blew. Will try to get a vid up of what I am talking bout. By internal baffle for the catch can do you mean stuffing it with the metal scrubbing pads in a stockings? If so then no I have not done that as I thought since it is venting to atmo I would not really need it. I am just dumbfounded to the results I got basically no oil anywhere but when ac on it plumes out of the exhaust. Any other suggestions as i am all out of ideas? Just want to kno for sure what is happening to my car before I go spend money on items I do not need.

[Guilt-Toy]

if you don't want so spend any money then you need to remove your inlet manifold and clean it out. also remove the exhaust and clean it out as well.

give that a try

[No Crust Racing]

+1 for remove and clean it all for starters

[James_03]

Yeah my guess would be that the IAC valve is coming in when you turn the A/C on at idle, and I would bet that the lower half of those air pipes feeding it are filled with oil.

When you look at how then IAC is located on the 33 manifold, it would be very easy for it to catch residue oil.

+2 for remove inlet and clean.

[our12]

Hi.

Has your brake fluid level dropped. If it has the brake booster is leaking internally and brake fluid is being sucked into the manifold through the vacuum line and burns white.

May not be the problem but worth checking.