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Thread: Smoke coming up from under intake hose?

  1. #1
    Join Date
    Jul 2002
    Location
    Seattle, WA
    Posts
    287

    Smoke coming up from under intake hose?

    Whenever I start my car and it's warming up (or even when it's warm and running) a little bit of smoke comes up from underneath my intake hose.

    It varies... sometimes there's no smoke, sometimes there's little smoke, but it's never enough to make me worry. When the hood is down, you can't tell at all (meaning there isn't enough smoke coming up to go out around the edges of the hood).

    I'm pretty sure i'm not leaking any oil, as every oil change I still dump out almost a full 5 quarts.

    Anyone have an idea of what could cause this? Any known issues down there?


  2. #2
    Join Date
    Jun 2002
    Location
    Orem, UT
    Posts
    5,902
    its oil from the valve cover gasket dripping onto the exhaust manifold. even a small amount of oil will smoke when its heated up.
    Scott Long
    1992 SC 5-speed
    Black on black leather, lowered, 18x9 Chrome Saleens...

  3. #3
    Join Date
    Jun 2003
    Location
    Vancouver, Washington USA
    Posts
    1,740
    PCV Valve come loose or hose popped off? It is right under that area. Does it do it when the engine is completely cool at start up? If so oil from valve cover leak could not heat up that quickly to cause smoke.

    Yeah those pesky valve cover gaskets are cheapoh!!

  4. #4
    Join Date
    Jul 2002
    Location
    Seattle, WA
    Posts
    287
    I suspect PCV more than valve cover gasket.

    It does smoke almost immediately after startup. I know the exhaust would heat up real quick, but it smokes immediately.

    What would i need to check/replace for this?

  5. #5
    Join Date
    Jun 2003
    Location
    Vancouver, Washington USA
    Posts
    1,740
    Look under there where the PCV valve sits and see if you can see anything. I am not sure but I think I had to pull TB to get at it. If you do look around in there for bad hoses and vac lines. If you cant see it, then let me know and I'll post picture when I get home on my computer...heck if youre in there you might as well replace it for only $4 ...part number, do search for "correct pcv valve part number" I posted pic of correct one last week.

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