300ex Starting Problems

[ridered300]

I having some problems starting my 99 300ex. When the engines cold it starts right off perfectly. But after riding a little bit and taking like a 5 minute break it doesnt want to fire. It acts like the spark plug is bad but Ive replaced it and that wouldnt make sense since it starts up fine cold. If I hold the start for about 10 seconds it will usually fire up but thats not supposed to happen. Any ideas would be great, thanks

how good does the bike run when you're riding?

[ridered300]

It runs fine, the only problem is when I try to restart it.

check to make sure that the bolts on the battery that hold the wires on are tight...that is what usually does it to mine......i dunno it was just a thought

[250xman]

also u should check ur pilot jet. mine did the same thing and it was the pilot jet. just put in a bigger oneandit should be ok.

You should also check all your grounds like to the starter and coil cause they might come loose when you riding. Just A thought

[Hoe300ex]

mine does the same thing but a while back i charged the battery and cleaned the terminals nad it worked fine for abotu 2 weeks and its doign it again but i dont feel liek messing with it caue it starts after liek 5 seconds