gt80 won't start

Discussion in 'High Performance Bicycle Engine Tips and Motorized' started by aarcher30, Mar 19, 2017.

  1. aarcher30

    aarcher30 New Member

    Joined:
    Sep 18, 2014
    Messages:
    44
    Likes Received:
    0
    ran a gt80 with speed carb, reed valve, straight pipe. I ordered the keihin carb and now it won't run, I read up on the air fuel mix the idle and the clip setting. any other ideas like what jet and size to start with? I'm in Pennsylvania, and yes the bike ran prior the the new carb, also bought open banana pipe (no baffles).
     
  2. aarcher30

    aarcher30 New Member

    Joined:
    Sep 18, 2014
    Messages:
    44
    Likes Received:
    0
    any ideas?
     
  3. aarcher30

    aarcher30 New Member

    Joined:
    Sep 18, 2014
    Messages:
    44
    Likes Received:
    0
    broke down the carb cleaned out the Jets which the main did have some melted plastic in it. but now I'm dumping gas out of the Jets with or without the bike running
     
  4. Chaz

    Chaz Member

    Joined:
    Jun 3, 2012
    Messages:
    821
    Likes Received:
    16
    Assuming that you've cleaned out anything that could hold open the fuel inlet valve, I would guess that the float is set too high. This would cause flooding and hard to start issues.

    Just a guess from a chimp.
     
  5. bairdco

    bairdco a guy who makes cool bikes

    Joined:
    Aug 18, 2009
    Messages:
    6,322
    Likes Received:
    2
    Check the needle valve, make sure it's not stuck or clogged and causing the floats to stick.
     
  6. mike carter 2

    mike carter 2 Member

    Joined:
    Nov 23, 2011
    Messages:
    180
    Likes Received:
    6
    i have the keihin carb on my reed valve gt80.have no problems at all.well over 1000 miles on it.most of the time something iv worked on wont run i go back and recheck my work.a lot of times it me thats the problem:-||
     
  7. aarcher30

    aarcher30 New Member

    Joined:
    Sep 18, 2014
    Messages:
    44
    Likes Received:
    0
    thank you all for your help, I bent the clip a little to adjust the float, runs fine now, thank you very much.

    what's the best exaust gasket I can use for this gt80?
     
  8. Chaz

    Chaz Member

    Joined:
    Jun 3, 2012
    Messages:
    821
    Likes Received:
    16
    Good to hear you got it sorted. For an exhaust gasket I would look for one that has a rectangle-ish opening to match the cylinder outlet port. Get a few of them as they are cheap and spares will be needed at some point. I think Sick bike parts has one that is solid metal that could be hogged out and still have some meat on it. Not sure but worth checking out.
     

Share This Page