Question about 1993 Pontiac Sunbird
Smoke from tail pipe or smoke from under hood?
A general rule of thumb if it is coming from tail pipe the color of smoke will tell you a lot.
White and thick means head gasket failure, Blue means oil is being burned.
I would recommend you check the seal of everything and make sure it is cleaned that had to do with vacuum or fuel distribution. EGR valve (gasket fails sometimes) IAC valve, MAP and MAF sensors, Fuel injectors, FPR (this will need replaced if leaking),
Also check you coolant and oil look for signs of either one mixing with one another, smell you coolant and make sure it don't smell like gas either, look around where the head meets the block and make sure you don't have any coolant leaking there. The smoke if from the tail pipe makes me think head gasket and these are simple checks. They are not 100% diagnosis but can lead you to the problem.
Also one obvious thing would be make sure no one put anything in your gas tank.
I would most likely look at the injectors first then the head gasket next.
Posted on May 10, 2013
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Posted on Jan 02, 2017
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