I have a 05 ZX6r and am having problems with it once it gets warm. After about 30 minutes of riding 1 or 2 cylinders start to cut out and it skips and puts real bad. I took it to a dealer to have it diagnosed and they couldn't find anything wrong with it. I have also talked to other people and they don't have ideas. I've ran about 3 tanks of gas through it this was and changed the plugs and air filter twice. Anyone have any ideas??? I need to get it fixed before the riding season kicks in fully. Thanks

 

What did the plugs look like that you took out. Were they real sooty looking or sort of white? Or damp. I'm thinking it's getting intermintent fire. Coils going bad?

 

The plugs didn't look bad. They weren't all carboned up or anything. I heard from some people that it may be a coil or 2 going bad or breaking down but i do not know how to figure out which one it is. I had them tested and the dealer said they were all ok. ( i dont have much faith in the dealer from previous experiences) And the problem happens whens it warm not right off and they were tested cold. I looked up prices and i can't afford to replace all 4 at 110 a piece. And i also found out that there are 4 coils and 1 pulseator coil. I am royally confused with this problem.

 

Welcome to KF. It sucks not trusting your local or even internet help. so what does your expertise and manual tell ya on this issue?

 

that sucks but it sounds like the coils are going bad on you if there cutting out while there warm. you could also have dirty injectors too depending on where you get your gas from.

 

Mmy expertise don't tell me much. I am not the mechanically inclined type persay. I mean I know a little bit but not to much. I have heard a lot of people say it is probably a coil breaking down. That is also what i am receiving with the help of this forum. I just do not know how i can figure out which one or more it is since it only does it when its warm. They were tested cold and it said they were fine. At least thats what the dealer said. I have also ran injector cleaner through the bike twice and i get my gas from Hess.

 

If you think that one or more of the coils are failing at warm temps you could run the bike until you start to have problems and then very carefully (carefully meaning without burning yourself on the hot engine) pull the plugs one at a time and see if they are all firing...

 

Even the manual says to test when cold with a certain resistance. What resistance did your other cold tests give you?

 

Thanks for all the help fellow riders. I changed my coils on Friday and took it for a ride and that seemed to cure my problem. Between friday and saturday i put about 600 miles on. Glad to have it back. Thanks again.

 

Glad to see you are back on the road!!!