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Start up smoke

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by sapper, Sep 8, 2001.

  1. sapper

    sapper 1/2 ton status GMOTM Winner

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    When i start my truck it spits out a blueish/white smoke for about a second and then is fine. Anybody have a clue. Engine is TBI 350

    <a target="_blank" href=http://coloradoK5.com/gallery/Pauls89K5>http://coloradoK5.com/gallery/Pauls89K5</a>
     
  2. Mreetz

    Mreetz 1/2 ton status

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    Rings are gettin tired......

    1984 K-5
    4" lift
    35x12.5 MTs
    buildin a 400 for it, any info greatly appreciated
     
  3. klier

    klier Registered Member

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    Sounds like the infamous Chevy Valve Seals .... I don't own a GMC/Chevy vehicle that DOESN'T blow smoke at startup. If you want to go through the trouble, replace them. There are various techniques you can use, which I'm sure someone will speak up on...

    Brian Klier
    '74 Jimmy/'86 Blazer Hybrid
    <a target="_blank" href=http://kliernetwork.net/truckproject>http://kliernetwork.net/truckproject</a>
     
  4. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    Sounds like maybe a valve job is needed? However mine blows a little bit of that and it's fine... like it was stated I think it's just part of owning a K5....

    How can I miss you if you won't go away? [​IMG]
    <a target="_blank" href=http://www.chevycagal.homestead.com/steph.html>www.chevycagal.homestead.com/steph.html</a>
    &lt;&gt;&lt; 1 Timothy 4:12 &gt;&lt;&gt;
     
  5. CV202

    CV202 1/2 ton status

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    Valve guide seals. I once saw one that didn't puff a little bit of smoke...but realized it was only a dream....LOL Don't worry about it til it starts dropping birds out of the sky.

    Why do people keep calling it a Bronco!!!!! [​IMG]
     
  6. White Knight

    White Knight 1/2 ton status

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    Valve guides are bleeding down into the cylinders after you shut down and then on start up it'll smoke a tad, seen my truck do that for over 100,000 miles before I replaced the second motor.

    White Knight

    <P ID="edit"><FONT class="small">Edited by White Knight on 09/08/01 09:12 PM.</FONT></P>
     
  7. sapper

    sapper 1/2 ton status GMOTM Winner

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    Thanks everyone

    <a target="_blank" href=http://coloradoK5.com/gallery/Pauls89K5>http://coloradoK5.com/gallery/Pauls89K5</a>
     

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