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lota of smoke
i have a 87 944 [non turbo] that has a problem that i have been half heartedly trying to fix for about 3 months now. teh problem is that occasionly[maybe once every 3 weeks] when the car is warmed up and going down the road there will be what can only be discribed as a huge billow of smoke out the rear. the smoke is blue but as it happens on no regular basis i don,t know whether it is from the tailpipe or burning off the exhaust. this smoke will continue for maybe 20 seconds and then is gone.the engine runs smooth. i am sort of leaning towards a head gasket but there is no white smoke i am reluctant to start to pull it apart sam
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