Hi everyone,
I have a 1987 TSI turbo (125,000 mi.) that is blowing white smoke. I store it in the winter and this last spring when I started it, thick white smoke poured out of the exhaust. After a while it thinned out but even the next day it stilled smoked but much less so. The car has never done this before, even after storage. If it were condensate, I would think it would disappear after warming up.
The antifreeze level has not dropped one bit. The exhaust does not smell of antifreeze.
Inspection of the interior of the turbo showed no damage at all. I am the original owner and, on the advice of a mechanic when I bought the car, ALWAYS let the turbo cool for a few minutes. I have never driven the car hard. I have a 911 that I use at tracks.
I have added a quart of oil between changes for some time now. I assumed that there would be some ring blowby in a car this old and mileage.
My Porsche mechanic replaced the gasket at the throttle body, thinking that might be allowing coolant into the intake. Upon removal the gasket certainly needed replacing, but it didn't solve the problem.
I know there can be many causes for this but based on these symptoms, can anyone point us in the right direction? I suppose a compression test would rule out the head gasket, but since the antifreeze level has never changed, he was hoping it might be something else.
Thanks for any help.
Steve