Fowling Plugs?

[bhall02]

Hey, i Keep having problems fowling plugs on my 400ex. It isnt smoking or anything, but ive fowled 2 in the last month. Any ideas what it could be? Too much gas? Not enough Air?

Thanks

[nosliw]

if you pump the gas too much while the quad isnt running it will foul them

do you have any mods?

[bhall02]

Jet Kit, K and N, and exhaust

[Rico]

are you using the choke when you start it?? And is that when your fouling the plugs???