i am new to atvs and my raptor 350 is my first quad, after i jetted my quad i bought a new spark plug, a champion, i put it in and it ran fine for about 10 minutes then it started to bogg down at full throttle. i then let it cool down for a while because it seemed to be hotter than normal. i then put the old spark plug back in it and at first seemed ok but then started to bogg again even worst then before, then it wouldnt go at all, just idle. HELP PLEASE!!

 

These engines rarely ever have a spark plug problem. Seems to me you have a carb problem - like you're not getting enough fuel. What jet did you use when you rejetted?

 

check your parking brake at the caliper.. it is hanging up

 

yeah ur right i should of known that because my dirtbike did the same thing. i dunno wut i was thinkin???

 

o yeah i went up 2 1/2 sizes to 145.(i have a fmf pipe and k&n in case ur wonderin why i jetted) it was runnin fine two days after i jetted it but i couldnt tell wut color the spark plug wuz, thats wen i put the new one in. wen it started boggin i automaticly thought it was the plug cuz it ran good before i replaced it. i justed cleaned it so it should be good. thanx!!

 

no problem... u got aim?

 

no why? u wanna talk or sumtin?