300ex dies when warm

[Crazy300EXguy]

I have a 300ex and when i get it warmed up after about 20min or so it dies but if i take the air filter off it runs a lil longer I have no idea whats wrong so any input would be good thax.

[OCCRA288]

Is the air filter clean?

[Crazy300EXguy]

Yeah is a aftermarket one i washed it and put it back on and like a week later this started happein. I was told by one guy that he thinks thats it needs some head work.

[OCCRA288]

how's the plug? Does the engine burn oil? I need more info. did you oil the filter after you cleaned it? (I know these are retarded questions just trying to find some more out)

[Crazy300EXguy]

The plug is good dosent burn oil and yeah i think i oiled the airfilter would it hurt if i dident.

[KP's lil'300]

Is your choke on? I know it sounds stupid, but it is a possibility. KP

[OCCRA288]

Yes it will hurt your engine if you don't oil the Air Filter.

I don't know what to think is wrong with it. You might have to take it in to your dealer and let them troubleshoot it.

[toby400ex]

do you just let it idle for 20 minutes without moving it, then if thats so it is just overheating from not getting any air flow.:huh

[Crazy300EXguy]

nope i run it around yeah im gonna take it to the shop cuz this is pissen me off.