Engine stopped and puff of smoke from under gas tank

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  • littleroot
    • Jan 2026

    #1

    Engine stopped and puff of smoke from under gas tank

    Was out on a long ride yesterday and stopped at a light a few blocks from my house and had the bike in neutral and the engine just died and then a puff of black smoke came out under the gas tank, on the left side.

    I did not try to restart the bike, I just pushed it to the curb. There was a smell almost like really old burnt rubber. But she started right up and I rode home no problem. When I got home the exhaust had more white smoke than normal and the small from the engine area was still pretty strong. I was late for an appt and did not have time to look closely while it was hot but I figure I will pull the tank and look closely, externally for anything burnt. Maybe something in the cylinder blew, like a ring? Still seemed to have OK power. I need to do a compression check obviously.

    Any ideas on what to try?

    Thanks!
  • Guest

    #2
    Pull the tank.. Sounds like an electrical shortage.

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    • JEEPRUSTY

      #3
      Originally posted by Octain
      Pull the tank.. Sounds like an electrical shortage.

      is that like a fuel shortage?
      JK Octain I work on computers and a puff of smoke is a fact of life.
      electricity is the work of the devil.

      I had a burnt rubber smell once when a reg rectifier failed on me

      Comment

      • littleroot

        #4
        Originally posted by JEEPRUSTY
        is that like a fuel shortage?
        JK Octain I work on computers and a puff of smoke is a fact of life.
        electricity is the work of the devil.

        I had a burnt rubber smell once when a reg rectifier failed on me
        Well, I had just replaced/fabricated and installed a new mounting for my regulator so I better start looking there!

        Comment

        • littleroot

          #5
          Originally posted by JEEPRUSTY
          is that like a fuel shortage?
          Ha, well, I did just switch to reserve while on the highway. :-)

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