I have a kawasaki 2000 w650 does not fire on right hand cylinder when idling,ok when revs are increased no change when spark plugs are swaped over,could this be ploblem with IC ignition switch

SOURCE: Hi 2000 yamaha Vmax, 4600 miles on the clock.

This sounds like a carburetor problem. Either bad gas, partially plugged pilot jets, carb diaphragm cracked or has a pin hole, carbs out of sync or diaphragm cap is not tight. It would be best to have a dealer check it out. However, before going to the dealer I would try one thing. Drain the float bowls on all four carbs. There is a drain plug on the bottom of each bowl. Condensation inside the gas tank can make it's way into the carb. Bikes don't run well with water in the gas. Please rate my solution. Thanks.

Testimonial: "Right on the nail!!!! Thanx for that - could have costed me a bit! When into the Yamaha dealer with the bike and was told that they have to do fault finding and could cost me anything between £80 - £300 ... needles to say, drove right out of there and did your fix - perfect! P.S Sorry for the delayed response - been away!"

SOURCE: HD 1200 Sportster 1997 model misfiring on rear cylinder

hi paul here,
the coil on my bike turned out to be the problem after checking wires, connections and plugs. brought a used single fire. tried it out after being told that coils usaully go all bad not just half. have not had the problem since and i was conteplating buying ignition and coil combo for hundreds. good luck

SOURCE: Rear cylinder not firing

The first thing I would do is replace the spark plugs again. You can foul a plug and it will cause you more problems than you can ever imagine. I see you have done all the logical things that I would recommend but I did not see you have replaced the plugs after the 200 miles. You would be surprised at how many times a $2.00 part can cause fits beyond belief.

SOURCE: kawasaki 300 bayou won't rev up.

No guarantees but try this. Pull the slide from the throat of the carb. Now move the clip on the jet needle down one notch. This will richen the low end mix. Two notches may be needed but do one notch at the start.

SOURCE: i need igniter of kawasaki gpz 400r type

Google " motorcycle salvage Kawasaki " You can probably fine it there.