Hello! Need some help here. Have 2001 Rubicon 500 was riding,died never to start again. I replaced the valves now I get a back fire but only if I prime the carb with starting fluid. Valves are set spark is good is there something I might be over looking or is there a electronic part I need to look at as well.. Any help much appreciated...Thanks

 

have you cheked the spark plug, also check for any codes. this quad has a computer like the ones on cars, it has a self dignostic mode, check the basics like, gas, sparkand compression.

 

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raxinx73 what do you mean by " I replaced the valve's " ?
a little more info would help finding your problem !