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exhaust question

Discussion in 'The Garage' started by slackjawsk5, Feb 3, 2006.

  1. slackjawsk5

    slackjawsk5 Registered Member

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    hey guys i was wondering what would cause whitish grey exhaust to pour out only on of my tail pipes. the engine sounds good, thought it could be a head gasket or something what do you guys think
     
  2. blackblazer717

    blackblazer717 1/2 ton status

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    is it after the truck warms up or when its cold, your question is very short and not a whole lot of info.
    im guessing all the time but i say a leaky intake or head could be the culprit. i had a intake gasket go on a 305 and it poarded white til i change them....

    LUKE
    just a thought
     
  3. goldwing2000

    goldwing2000 Guest

    Yep... sounds like steam.

    Head gasket, cracked head or cracked cylinder wall.
     
  4. dave_90_blazer

    dave_90_blazer 1/2 ton status

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    which tail pipe, and what trans are you running?

    if a trans with a vac. modulator(350/400) and the vac line is to a runner on one side or the other(I have seen most to the runner for #8 cylinder, pass side) , and the modulator is bad, it will suck trans fluid into the runner



    p.s., trans fluid burns white
     
  5. 1-ton

    1-ton 1/2 ton status Premium Member

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    If it is grey, it could be running too rich. A rich mixture cuases grey smoke. coolant causes white smoke. try the smell test on your exhaust. If it has a sweet smell it is coolant. If it is gasoline, then it will have a chemical type of smell.
     
  6. goldwing2000

    goldwing2000 Guest

    Last I checked, too rich caused black smoke. :thinking:
     
  7. dave_90_blazer

    dave_90_blazer 1/2 ton status

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    just slightly rich is grey
     
  8. 1-ton

    1-ton 1/2 ton status Premium Member

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    Black smoke is normaly a sign of burning oil.

    Black smoke = oil

    White smoke = water

    Grey smoke = gas

    But this is not written in stone or anything.
     
  9. goldwing2000

    goldwing2000 Guest

    I think you got your gas and oil backerds. Oil definitely produces whitish/blueish smoke. I get reminded of this every time I start my Blazer. :D
    I suppose grey could be taken for blue so it could be an oil burning issue. And if there's that much oil burning, then the transmission vacuum line is definitely a good place to start looking.

    Just to coroborate: http://www.bellaonline.com/ArticlesP/art10101.asp
     
  10. slackjawsk5

    slackjawsk5 Registered Member

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    if the vaccum modulator is bad will that make the engine lack power
     
  11. dave_90_blazer

    dave_90_blazer 1/2 ton status

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    it would definately effect transmission shift timing/quality(which can be mistacken for power issues) and the oil can foul the plug/s as well
     
  12. slackjawsk5

    slackjawsk5 Registered Member

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    thanks guys ill have to try that
     

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