ok so first i have an 07 z400. ran fine until i put on the exhuast and rode it for a while. then it bogged out and died and didnt wanna run. and if it did as soon as i hit the gas it would die out. i bought an FMF jet kit for it which doesnt help half as much as i hoped becuz it just says to put the same size main jet as the stock and put the needle on clip 3.

so basically anyone have an idea of what i should do to fix the problem? i changed the main jet to a 134 already and tried it and she ran and then died. then i started itone more time and gave it gas and it bogged out and then wouldnt start again. is this a fuel problem? do i need to go to the 4th notch on the needle? i also just bought a twin air filter becuz a few people said i need to push more air in if i pushin more exhuast out. the FMF kit doesnt come with pilot jets either should i get a larger one of those?

any help would be much appreciated.

 

You could check your fuel line from the tank to the fuel petcock and from there to the carb. Maybe you have a clog along that route. Also, I know it sounds like a dumb suggestion, but check to see if the petcock is in the right position. Maybe it was moved to one of the other positions or slightly in between. Guess I'm just fishing here, but it's a thought. Try asking this on the Suzuki forum as well. Good luck,[img]i/expressions/face-icon-small-smile.gif[/img] hope you get it going!

 

donno what it is now. i messed with the jetting some more then got frustrated becuz it kept doign the same thing. so i put all the stock parts back on and it still does it soi guess i burned something up from running too lean.