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1984 Buick Turbo V6--stock--approx.100K--set for a few weeks --took it for a spin--now it has started to smoke with a rough idle--no smoke good idle. Friends car-forgot to ask color of smoke. Any ideas. Thanks
 

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If the smoke is blue and the plugs are clean,then the turbo is leaking oil into the downpipe.If the plugs are fouled and there is oil in the discharge pipe then the turbo is leaking oil through the compressor side.Either way it is time to rebuild or upgrade the turbo if that is the problem. powersix
 
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