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White smoke in engine bay - Transmission?

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    #1

    White smoke in engine bay - Transmission?

    I replaced and checked all the hoses/connections/etc on my head swapped m20 to see if there was a coolant leak causing the smoking in my engine bay and it's still happening. I drove it real quick bit around the block to get the smoke going and now I'm wondering two things.

    Is it possible to get something in/on an exhaust that would cause persistent smoke?

    Is it possible to have ATF low enough that a transmission would smoke?

    I've got to get to the bottom of this, I can't stand not driving this car!
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    #2
    is it coming from the exhaust side?

    I'd guess rocker cover gasket leaking oil onto the exhaust.

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      #3
      Originally posted by ewolfe57 View Post
      I replaced and checked all the hoses/connections/etc on my head swapped m20 to see if there was a coolant leak causing the smoking in my engine bay and it's still happening. I drove it real quick bit around the block to get the smoke going and now I'm wondering two things.

      Is it possible to get something in/on an exhaust that would cause persistent smoke?

      Is it possible to have ATF low enough that a transmission would smoke?

      I've got to get to the bottom of this, I can't stand not driving this car!
      Very possible. I have seen it happen. Previous post is probably correct. My girlfriends e46 did the same issue. Smoked a lot, it was somewhat intermittent (The only reason it was intermittent was the oil level).

      Check your exhaust manifold, if the heat shield (Flat plate) is spotty. You will need a new valve cover gasket!
      20% Accurate

      Morty: Well Summer maybe people that create things aren’t concerned with your delicate sensibilities you know? Maybe the species that communicate with each other through a filter of your comfort are less evolved that the ones that just communicate? Maybe your problems are your own to deal with and maybe the public giving a shit about your feelings is a one way ticket to extinction.

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        #4
        My guess is that the valve cover G is leaking on the heat shields.
        Current Collection: 1990 325is // 1987 325i Vert // 2003 525i 5spd // 1985 380SL // 1992 Ranger 5spd // 2005 Avalanche // 2024 Honda Grom SP // 2024 Yamaha XSR700 // 2024 Jeep Gladiator Rubicon

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          #5
          Man I hope you guys are right! I have an extra gasket lying around so I should be able to check it pretty soon!

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            #6
            I was reading some forums and came across one that described similar symptoms to what I'm having, could white smoke be cause simply by a poorly bled coolant system or air bubbles in the coolant?

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              #7
              it is likely a coolant leak. oil smokes BLUE/dark not white. Only coolant or water based fluids are gonna smoke a whiteish color. Did you check the coolant connection on the back of the cylinder head?

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