1985 v30 magna starts but wont idle

Discussion in 'Motorbike Technical Discussion' started by Kevin James, May 22, 2012.

  1. Kevin James

    Kevin James Guest

    This 1985 vf500c magna is my first bike and I bought it as a project
    bike. I have been able to get the bike to start and respond to the
    throttle. But I have never been able to get the bike to stay at
    idle. Ive been able to rev the engine but when I let go of the
    throttle it dies. Now, as soon as I turn the throttle it will rev up
    then die. Any ideas?
    I went through the carb and everything looked good and cleaned
    everything out. The one thing I can think it would be is that there
    was one fuel joint gasket from the #1-3 carb that should probably be
    replaced. Is there anywhere I can buy those gaskets rather than a
    whole set?? Im on a pretty tight budget.
    Kevin James, May 22, 2012
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  2. Gummed carbs. Ultrasonic cleaners are your friend.
    The Older Gentleman, May 22, 2012
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  3. Kevin James

    #*0*# Guest

    I suppose you've tried turning up the master idle knob under the carbs and that didn't help.

    Our gasoline available here in the USA usually has 10% ethanol added to it and that gums up the tiny jets, ports, and passages in the engine.

    I recommend buying a 15-ounce can of Berryman B12 Fuel Treatment (costs about $3.50 at Wal*Mart) and pour four ounces of it into a full tank of gasoline.

    Use a funnel to avoid spliiling any of the B12 onto your paint.

    Then go ride the motorcycle until the idle RPM increases.

    If the idle RPM increases too much, turn it down.

    You can mail order carburetor parts from www.powersportspro.com and they will mail you the parts for a few $$$.

    There are also places like www.bikebandit.com, www.oldbikebarn.com, etc that sell aftermarket parts.
    #*0*#, May 22, 2012
  4. On Tuesday, May 22, 2012 10:32:37 AM UTC-7, #*0*# wrote
    krusty kritter, May 26, 2012
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