White smoke at start up after a 2 hour trip.

Discussion in 'Engine & Drivetrain' started by Ricardo Rocha, Jun 18, 2017.

  1. Ricardo Rocha

    Ricardo Rocha TYF Newbie

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    Sup guys I just bought a 2009 Yukon slt with 130K runs like a champ no lights on the dash and everything runs and sounds the wau it should. Ive only had it for 3 days its the first GM suv i own, so i took a 2 hour trip to and the next morning whe. we were leaving for breakfast it threw a cloud of white smoke and today acter we came home and the trhe suv was sitting for about an hour we went out again and it threw a white cloud of smoke its only for a few seconds and only at starts up after a long trip. The oil was only changed 1500 miles ago because i went to a valvoline place and it was on their computer that this suv had an oil changed every 3000 miles. Just wanna see if anyo e has any issues like this with their suv. Thanks ill appreciate the feed back.
     
  2. Danny3737

    Danny3737 Full Access Member

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    White smoke usually means there is water getting in to places it shouldn't be. Check the dipstick first to see if there is any presence of water
     
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  3. Meccanoble

    Meccanoble Full Access Member

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    Doesnt white smoke also mean car running lean? But this would be happening when driving, not just on initial start up. What other options he has to find water?
     
  4. Ricardo Rocha

    Ricardo Rocha TYF Newbie

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    this morning when my wife fired up the truck she said no smoke came out and the past 2 times thats its done it was after sitting over night after a 2 hour trip. im assuming its condensation.
     
  5. harbison

    harbison Member

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    Mine did this for a while. Seems to have stopped now. Only on start up. Only did it when vehicle had sat overnight or a couple of hours. Never saw any presence of water on dipstick or in oil change. I'd love to know what causes it.
     
  6. Ricardo Rocha

    Ricardo Rocha TYF Newbie

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    the dealer told me it was a bad pcv valve that gm design so it was swaped out for an after market one.. i just got done yesterday ill update as time goes by.
     
  7. pwtr02ss

    pwtr02ss Full Access Member

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    Buy a new valve cover. PCV is non-serviceable. My truck did the same thing and that fixed it.

    Unless thats what you were talking about then you said you bought an aftermarket one.
     
  8. harbison

    harbison Member

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    pwtr02ss, are you saying your problem was white smoke caused by oil?
     
  9. pwtr02ss

    pwtr02ss Full Access Member

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    Yes. The PCV was clogged and was not venting the crank case correctly. At the higher RPM drive on the highway, the crank case would build pressure and blow oil past the rings, into the cylinder. That oil sits int the cylinder and burns up when you restart. That was my issue anyway. It cut the oil consumption back to almost none as well.
     
  10. harbison

    harbison Member

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    I'll try that. Do you remember what brand valve cover replacement was? The only one I found is DORMAN 264969.
     

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