Katana Carb Problem (HELP!)

Discussion in 'Motorbike Technical Discussion' started by Tim, Aug 18, 2003.

  1. Tim

    Tim Guest

    Hi all,
    Ok, here's the deal. Last week I was messing with my 2001 Katana and
    trying to bring up the idle speed since it was lower than what the
    specs said it should be. Here's where I admit that I did a stupid
    thing... I adjusted the inside carb synch screw thinking it was the
    idle adjuster since it was right next to the throttle cable. Note: At
    the time I was doing this the engine was running. I realized pretty
    quickly what I had done and wasn't all that worried because I'd been
    wanting to get a carb synch and synch them anyway, so I shut off the
    bike and ordered my Hg Syncher from JCWhittney.

    So, here's where my problem begins... After I received my synch I
    went back out to do the job and now my bike won't start. AGH!! After
    a lot of tinkering and pulling off the carbs and visually adjusting
    the butterflies according to the manual I was able to get the bike to
    start and run at a very low RPM (but it didn't sound happy). If I
    even tried to raise the idle at all it would die, so I attempted to
    synch the carbs at about 700 rpm, but after I did, it still was having
    the same problem. I'm at a total loss. I'm not sure if this matters
    or not, but during my own stupid trial and error diagnosing, I sprayed
    some carb started into the carbs to see if I could get it to run and
    it did, and if I sprayed some into the carbs while it was running the
    idle would dramatically increase (which I can't get it to do with the
    throttle without killing it). I'm not sure if that helps, but I
    thought I'd throw it out just in case. It seems to me that I'm having
    a fuel issue, but I can't see how my bike went from running fine to
    not running at all with only a little help from me. I've been
    debating on pulling them apart and cleaning them, but before I do I
    wanted to get some other suggestions since I really think it's going
    to be a waste of my time since the bike is fairly new.

    Thanks for any help you can give me!!!
    Tim, Aug 18, 2003
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  2. Tim

    Tim Morrow Guest

    You have replaced the airbox and checked all your carb boots for leaks, right?

    Another Tim
    Tim Morrow, Aug 19, 2003
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  3. Tim

    Tim Guest

    I guess I can double check that the intake boots are sealed. I would
    have guessed they were, but anything is possible.

    As far as the other suggestions made... Nothing was caught up in the
    intakes seeing that I did all of this with the gas tank off of the
    bike and the airbox was removed as well.

    Thanks for the suggestions,
    Tim, Aug 19, 2003
  4. Tim

    Tim Guest

    Ok, so I have my moments of stupidity. Yes, I was trying to synch
    the carbs with the airbox off. I plead ignorance. Thanks for
    pointing me straight. I will try again.


    It's always a pleasure to work with another Tim.
    Tim, Aug 20, 2003
  5. Tim

    Tim Guest

    Hello Again,
    Ok so putting the airbox back on seemed to improve things slightly,
    but I'm still having problems. It will run upto 800-900 rpm without
    dying and if I give the throttle a quick pull I can get it up to 2 or
    2500 rpm, but I have to let go immediately or it will kill it. Also,
    when I first started up the bike, I "turned on" the starter (enricher)
    system and the bike idled probably around 2 or 3000 rpm for awhile
    before I shut the enricher off. Any other suggestions?

    Tim, Aug 21, 2003
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