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Discussion Starter · #1 ·
so im looking for some help here. I have a 1998 honda 300ex, the thing fire right up and idles fine, but as soon as you hit about 50% throttle it starts misfiring like crazy. I just changed the spark plug (which was fouled out) and tried a coil/spark plug wire set up off of my other quad and it still does the same exact thing. If any one has any suggestions i'd really appreciate it
 

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Sounds like it could be a fuel issue. What is the condition of your carb, and did this just start happening out of nowhere?

Rob
 

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Discussion Starter · #3 ·
The carb was cleaned maybe about 6 months ago and is actually a carb that i took off of a 1993 300ex. Right now my little brother has some sort of cam2 racing fuel or somthing in it. This did start happening out of no where.

jeff
 

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I would try draining the racing fuel and get some normal gas in there.

Rob
 

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also..with it sitting..or not ran for 6 months..it prob would be a good idea to take the carb off..and give it a good cleaning...your jets maybe stoped up alittle.
 
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