95 pontiac grand prix gtp

Asked by Feb 06, 2017 at 10:07 AM about the 2005 Pontiac Grand Prix GTP

Question type: Maintenance & Repair

I have change.the power steering pump from up top an now  
my car will not staying when its does start I have white
smoke coming from my exhaust an it runs real rough an
shut off

6 Answers

73,705

A lot of white smoke coming out the exhaust indicates a bad head gasket.

It smells just like gas

76,625

Black smoke is running rich.

4,245

Do a compression test to see if it's a failed head gasket. Check your oil. If it's a creamy color instead of near black you've got coolant leaking into your engine.

My oil is still black an antifreeze is still green.what about a bad injector if it is stuck open could that dump to much gas an make it run like that

4,245

Lots of things are possible. Have it scanned for trouble codes. Even though its an older car there are some codes available to guide you. White smoke is not indicative of a rich running engine, but its definitely indicative of a problem of some sort. Check for a plugged catalytic converter too. That can cause serious problems and is common on older cars. Have it removed or replaced if it is not flowing freely. Any good muffler shop can help you out there.

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