Jim Grant's Tech Tips
'86
Buick Grand National, Smoking Tail Pipes
Q:
I have an 86 Buick Grand National with a 3.8l SFI turbo
engine. The engine runs fine, no oil or antifreeze usage. However, I get
white smoke out of the exhaust particularly when I am decelerating. Compression
is good, all sensors have been checked or replaced. Do you have any idea
what the problem could be? ......Bob
A:
White smoke out the exhaust is a good indicator that your Grand National
has a problem. I might suggest checking the turbo seals. Leaking turbo
seals can introduce small amounts of oil that will create a noticeable
exhaust cloud. That oil will turn white when it travels through the engine
and out the exhaust. It does not take much oil to cause the smoke youre
talking about.
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