2000 zx9r backfire - Kawasaki Forum :: KawasakiWorld.com
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post #1 of 3 Old 10-20-2016, 08:59 PM Thread Starter
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2000 zx9r backfire

Hey guys hope you can help, I recently purchased a 2000 zx9r she runs pretty good other than when ridding the bike it back fires quite a bit so I pulled off float bowl on carbs and cleaned the jets and still the same?? Plz help
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post #2 of 3 Old 10-21-2016, 07:13 AM
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it back fires when you are on the gas?

Originally Posted by my12r View Post
He wishes he woulda thought of the green LED's first. He wishes he had balls big enough to ride without a helmet.
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post #3 of 3 Old 10-26-2016, 12:24 PM
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Hi Shane,

A back fire can be caused by one or more problems, here's a few ideas to hope fully get you going,

1) check for blockages in the entire exhaust system

2) check all spark plugs are firing and all coil packs/ht leads(depending on your system set up) you can purchase an inline spark tester to do this.

3) deterioration of carburetor/throttle body rubbers both ends air filter/and manifold end e.g splits/cracks in them they tend to go hard over time.

4) incorrect fuel/air mixture (if yours is carb set up try resetting them) throttle body set up could be a sensor fault/faulty injector etc. and if carb set possible worn needle/jets or internal damage,split diaphragms.

5) check valve clearances

6) check condition of air filters/airfilter box and ducting pipework (e.g not blocked,damaged etc)

7) check condition of you stator and charging system I had it on a zx10r where stator/alternator was failing(causing misfires/backfires) hope this helps,
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