400 won't start

[400exnVa]

ok here the problem, the dam thing won't start. It sputters like its going to start then it just shuts off. the tank is full of gasand is turned on, the battery is charged. For some reason it keeps fouling the plug. Its in a warm garage so I'm not using the choke just two pumps on the gas, which all it usually takes to start it. Shoud i try another plug or what. Its really starting to piss me off. Thanks for the help!

[Sick0]

Is you air filter clean? Do you have an aftermarket CDI box?

[400exnVa]

brand new airfilter and stock cdi box

have u jetted the carb recently if so u might be runnin toooo rich!!!

~JOEY~

[Texan32]

Yeah, fill us in on the details. Any recient "tuning" adjustments?

Take your gas cap off and try starting it..:cool:

[400exnVa]

heres the details it has the stock jetting. I recently installed a new K&N airfilter and an aluminum airbox with no lid. I didn't rejet the carb. For some reason my bike always seemed to be on the rich side. after installing all the above it ran just fine, plug looked good. But for some reason today it just won't fire. I'm getting good spark at the plug. It just turns over sputters like its goning to start the stops then after that it just cranks and cranks. I had it running good on tuesday but now nothing

[Doibugu2]

If you have stock getting, and took off the air box lid, you should be running why lean. Try putting on the lid if you can.

Try taking off your air cleaner and start it that way.

[400exnVa]

thanks for all the help. I finally got the pig to start. I installed a new plug and it fired right up. don't know why the other plug was only a week old. Time to play in whats left of the snow.