White Smoke fron '76 Shovelhead

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  • 4eyes
    Senior Member
    • May 2012
    • 143

    White Smoke fron '76 Shovelhead

    I'm getting white smoke coming out of my pipe off of the first cylinder. It gets worse as the bike gets hotter. Both cylinders are holding 150PSI and my next thought was maybe some condensation in my oil? But if that was the case, wouldn't I see it coming out of both pipes? Another thing that may be part of the issue, is that my push rods on the smoky cylinder does leak oil and the base gasket is leaking oil as well. Not sure if any of that would play into it. Any ideas?


    Also, just some additional info on my bike:
    -running ultima ignition
    -both plugs are a nice golden brown
    -straight exhaust pipes
    -cv carb jetted and tuned
  • cb550Matt
    Senior Member
    • Jun 2011
    • 382

    #2
    intake check your orings and is it mounted right?

    Comment

    • 4eyes
      Senior Member
      • May 2012
      • 143

      #3
      intake is good. there seems to be a little oil on the plugs, but it looks like only on the threads. front pipe has oil coming out of it. not a lot, but enough to coat the inside of the pipe.

      Comment

      • xllance
        • Apr 2024

        #4
        I say valve guide .

        Comment

        • Jhax
          Senior Member
          • Jan 2013
          • 131

          #5
          Originally posted by xllance
          I say valve guide .
          +1 I had the same issue earlier this year, bike pulled fine down the road but blew white smoke like a bitch once it warmed up.

          Comment

          • triumphbruce
            Senior Member
            • Jun 2014
            • 239

            #6
            valve guide seal could also be a problem
            sometimes too much oil in pushrod tube indicates oil return passage blocked /partially causing oil to build up in rocker box
            oil above valve guide being pulled into cylinder and over flowing down pushrod tube
            or a blown head gasket between oil return and cylinder bore you wont loose compression but as eng warms up it will suck
            more oil into cyliner

            Comment

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