Question about 2002 Volkswagen Jetta TDI
No coolant loss , compression check good , could failed turbo cause this
If you are getting clouds of white smoke out the exhaust it is a good indicator of antifreeze getting into one or more of the cylinders. I bought a "Great" car sight unseen from a friend once and when he pulled in the drive the whole car disappeared in a cloud of white smoke that only left when he shut the engine off. I found head gasket leaks in half the cylinders. It takes very little coolant to cause the white smoke. If you are absolutely sure of zero coolant loss perhaps the smoke is a little blue--an indication of burning a little oil from a sloppy turbo bearing. Try the nose test-- it may give you the answer. Burning oil has a distinctive smell.
Posted on Apr 18, 2009
I would tell you if the vehicle is a gas engine , The turbo could not cause the white smoke . The vehicle should feel a lack of power if the turbo is not working . You can do a basic check of the turbo yourself by checking if there is any oil leaks.
Then check the inside turbine fins for looseness when spinning by hand. Watch you fingers.
IF there is any wobble to the turbo , then replace it the bearing inside is gone. With the engine running any standing on the side of the engine , rev up the engine with the throttle by hand. You should hear the turbo make a very slight whine indicating the turbo is working . IF you hear a constant whine at idle or when revving the engine , The bearing is gone.
Posted on Apr 18, 2009
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Posted on Jan 02, 2017
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