Question about 1997 Yamaha YZF 600 R thunder cat

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Wont accelarate on my 1997 yzf600r the bike starts fine with the choke on. once i remove the choke and try to accelarate the throttle it starts to shut off. i change the spark plugs ,drained the fuel tank. its fine with the choke on please help

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  • nickels428 May 11, 2010

    what color was the tips of the spark plugs when you removed them?  just with what information you gave, my first thing I would do is to spray some "deep creep" found at most auto parts stores.  Spray it in the opened carb as directed on can.  Since you say it runs fine with the choke out it runs, tells me that you have a fuel restriction some where.  Spraying Deep Creek will help this if it is the problem.  If no help, tell me more about the problem.  Does it rev up with the choke out?  Is there any noises when it is running that wasn't there before this problem(like a sucking noise).  Does this model have more than one carb?  Did you drain the float bowl?

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You didnt say if the bike sat up for a while, if it has you have stopped up carbs the bike will run with the choke on but shut off when the choke is off says no fuel going thru the low speed jets clean them by taking the float bowls off and blowing them out with high pressure air

Posted on Jan 04, 2009

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Check your stand switch ,are the carbs in sync ?has the bike been changed in anyway?

Posted on Oct 25, 2009

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