Bike will not idle now!

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  • helmutholderbenz
    • Jan 2026

    #1

    Bike will not idle now!

    Hey guys, I have another problem now. Just got my 83 gs750e running great 2 days ago so yesterday I figured it was time to address my oil leak on my valve cover. one of the cam cap holes was stripped so I was going to put in a helicoil. got the cover off and realized my helicoils were the wrong size. I had another set of cam caps I got when I purchased the cams I'm using now so I changed the one out,spun the motor over a few times to make sure nothing was in a bind and it seemed all was good. put it all back together and now the bike starts but will only stay started if I pull the choke! even if I raise the Idle I can get it to idle but if I coast to a stop the bike dies! I didnt mess with the carbs at all! what did I do wrong???
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35787
    • Torrance, CA

    #2
    The cam caps are line bored with the head. A matching pair as it were. You should not mix and match caps because they will not be matched to your head. It's possible that the cap you installed is now pinching down on the cam and causing it to bind because the bore is not round. This said, there is typically enough cam bearing journal clearance such that you don't typically have issues. You best check it out right away though. If the cam and cap are scored up you got your answer.
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

    Comment

    • helmutholderbenz

      #3
      Originally posted by Nessism
      The cam caps are line bored with the head. A matching pair as it were. You should not mix and match caps because they will not be matched to your head. It's possible that the cap you installed is now pinching down on the cam and causing it to bind because the bore is not round. This said, there is typically enough cam bearing journal clearance such that you don't typically have issues. You best check it out right away though. If the cam and cap are scored up you got your answer.
      Thanks Nissism, I'm in the process of taking the cover back off so I can check the bearing.

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      • Guest

        #4
        DOOOOOOH!

        sorry

        Comment

        • helmutholderbenz

          #5
          Got it fixed! what I didn't do yesterday was recheck my valve clearance after I jacked with my valvetrane! I took for granted that just by removing one cam cap everything wouldnt move. Boy was I wrong!!! checked my bearing today to see if it was scored but it looked real good. checked my valves and three were tight. Shes back to running right and purring like a kitten at idle. You cant take anything for granted!

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