Question about 2003 Pontiac Grand Am

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Car seems to loose power, White smoke/vapor comes from tail pipe. Makes no noise and corrects itself within 10-20 seconds usually. Oil checked clean with no obvious signs of coolant. Have taken it to Mechanic. They said it's not the head gasket and the smell of the vapor is gas rich. Said I got some bad gas. Bad gas removed, new fill up and it's started again after I had it home a few days. Back at shop, they think it may be computer as they aren't getting any error codes and it runs great the rest of the time. Any thoughts? Thanks

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  • Pontiac Master
  • 454 Answers

Do a pressure check on all cylinders. Willing to bet you may have a leaky head gasket. If that proves wrong then check your coolant to see if there is any foamy like substance. If there is then theres a strong possiblity of a cracked block or leaky cylinder head

Posted on Sep 20, 2015

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  • 36 Answers

I work on cars. water is getting into your cylinders. sounds like you have a crack in the block and that means HEAD GASKET problems no matter what that other shop told you. TIME for a new car. oops.

Posted on Aug 20, 2015

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  • Pontiac Master
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You have a cracked block,check compression

Posted on Jun 12, 2015

  • Karen Esau-Stubbs
    Karen Esau-Stubbs Jun 12, 2015

    I believe it may be something along those lines as well but they claim they don't think so. I can't find any other reason I have "white" emitting from the exhaust.

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  • Contributor
  • 13 Answers

Sounds like it is feuding check your injectors

Posted on Jun 12, 2015

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  • Karen Esau-Stubbs
    Karen Esau-Stubbs Jun 12, 2015

    Will injector issues cause white smoke/steam to cone out of exhaust?

  • daniel
    daniel Jun 12, 2015

    Yes it will it is over fueling

  • daniel
    daniel Jun 12, 2015

    Is there a strong fuel smell

  • Anonymous Jun 12, 2015

    Are u getting my reply

  • Karen Esau-Stubbs
    Karen Esau-Stubbs Jun 12, 2015

    Yes I am and returned a comment. Not sure what my happened. yes there is a smell of gas. The mechanic said the smoke smell gas rich to coin a phrase.

  • Karen Esau-Stubbs
    Karen Esau-Stubbs Jun 12, 2015

    They also said they thought it was bad gas. Drained the tank and I refilled it. It started up again after having it back from mechanic for three days

  • daniel
    daniel Jun 12, 2015

    Where are u from ? I think u must get the co2 checked on your car

  • Karen Esau-Stubbs
    Karen Esau-Stubbs Jun 12, 2015

    I'm from Dayton ohio. I took it back to the shop today and they said they couldn't figure it out. Will pick it up tomorrow. Was just worried that I may be driving a car with a potential blown head gasket. Couldn't find anything else on white smoke from exhaust. What you are saying is more inline with what they think . Didn't realize white smoke could come from a bad mix

  • daniel
    daniel Jun 12, 2015

    The white smoke is from unbernt fuel in the cylinder .i am in Johannesburg SA

  • Karen Esau-Stubbs
    Karen Esau-Stubbs Jun 12, 2015

    Will hope this is all it is then. Thanks for your help

  • daniel
    daniel Jun 12, 2015

    Any time let me know if there any thing else

  • Karen Esau-Stubbs
    Karen Esau-Stubbs Jun 12, 2015

    Thank you and I will

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