Question about Pontiac Sunfire

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I have a Sunfire GT 2.4l and I have black smoke when under heavy acceleration. What could be the problem?

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  • Pontiac Master
  • 2,963 Answers

Way too much fuel. The fuel delivery system has problems. It may just be one injector that has no control, or other issues.
Get the ECU codes read by your favorite auto parts store. That is the best place to start.

Posted on Apr 04, 2015

  • 1 more comment 
  • phillipbafar Apr 04, 2015

    Sent out all injectors brand new flashed ecm everything ok what'snext did 2000 dollars in work still doing it

  • phillipbafar Apr 04, 2015

    Sent out all injectors brand new flashed ecm everything ok what'snext did 2000 dollars in work still doing it it happened when I was driving heard a pop then started blowing black smoke

  • gbob59 Apr 05, 2015

    Ouch, $2000? Take it back, talk to manager, talk to dealer? or area manager, talk to State consumer system, Talk to MFG customer service, Something they did is very likely to be the problem

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Posted on Jan 02, 2017

  • 176 Answers

SOURCE: coolant leak/head gasket

If you have a head gasket leaking, and your engine is blowing a white smoke from the exhaust pipe, then you're taking coolant/water into your piston/s.

After a heavy acceleration your pressure is forcing more coolant/water into your cylinders..but don't be fooled..water/coolant is also getting into your cylinder/s when you're driving slow too.

You should get the head gasket repaired as soon as you can, or the head gasket may very well let loose and then you get to deal with having the heads shaved if they warp from the heat.

Either way..you really should get the gasket replaced soon.

Posted on Dec 31, 2008

emissionwiz
  • 75222 Answers

SOURCE: Fault Code : P1664

P1664 FIP (Fuel Injection Pump) malfunction (possible air ingress in low pressure fuel side)
Most likey the Diesel fuel injection pump needs to be replaced or overhauled.

Posted on Apr 28, 2009

  • 3 Answers

SOURCE: Black smoke coming out of exhaust, only on

Your engine is running "too rich" meaning more gas is going into the chamber than is supposed to. If it is a late model, to need to see your mechanic. FYI , blue smoke is oil, black too much gas, white, antifreeze, (really bad).

Posted on Oct 10, 2009

  • 1 Answer

SOURCE: Black smoke on acceleration diesel x-type jaguar

can anyone tell me where the intercooler is on a 05 plate jaguar x type 2.0 diesel thanks

Posted on Nov 09, 2009

  • 4 Answers

SOURCE: 330 excavator with a c9 cat engine, heavy SMOKE

At the time you made all the above repairs, did you replace the "throw away" turbo charger? The turbo charger commonly sucks oil, and it is not repairable.

Run it without the inner & outer air cleaner. If it isn't the turbo, run the injector cut out test. If the injectors are ok, then you need to replace the injection system hydraulic pump, which is also unrepairable.

Posted on Apr 23, 2010

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