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Smoke out of oil filler cap and dipstick

Discussion in '1982-Present GM Diesel' started by AzzKicker, Jun 1, 2003.

  1. AzzKicker

    AzzKicker 1/2 ton status

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    Edinburg, Tx
    If I remove Oil Filler cap I can see some faint smoke coming out. If I remove the dipstick I see same thing.

    Is this normal. Truck has 200K.
     
  2. bigblock454

    bigblock454 Clack Clack Clack Premium Member

    Joined:
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    I believe this to be fairly normal. Diesels don't have any engine vacuum so it is harder to pull these vapors back into the intake. I think some of the diesel have a tube/filter that plumbs back into the air cleaner. Mine also smoke some from both the dip stick tube and filler cap.
     

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