my 03 raptor 6760 wont start it will crank but will not fire. i just did a starter clutch and it wont run now and i thought it might b the spark plug so i replced that and it wasnt i have gas and it is on what is stoping it from starting? could someting be in the carbs? also it wont jump start? y is this im 100% sure that the starter clutch is in right. once again y wont it start?