do raptor 660's knock a little
 

My engine seems to knock a little bit, similiar to the way my 2001 warrior did. IS this normal?

do raptor 660's knock a little
 

hmm...it depends how much...mine did when i had my 04 660...i think i could be a little normal but to much is probably not good...ive had so many prpbs with my 660 i got rid of it..

do raptor 660's knock a little
 

my o4 660 knocks a little bit when warming up. after that it knocks slightly. it must be a raptor thing

do raptor 660's knock a little
 

I hope you guys are speaking of valve clearance noise.

do raptor 660's knock a little
 

Thanks for taking the time to reply guys, and yes to me it sounds like valves clearance noise!

do raptor 660's knock a little
 

Mine was making that sound and it was the valve clearence. 75 dollers at the shop not too bad.

do raptor 660's knock a little
 

What do you mean by "knock?" my engine doesnt knock at all...

do raptor 660's knock a little
 

i mean a little valve knock when warming up. after it's warmed up it quits. but the engine does make some noise from valves. normal noise though nothing unusually loud.

do raptor 660's knock a little
 

it could be the gas octane your running i run nothing but premeium in my tanks for quads then you'll know for a fact it isnt that no matter what people say the higher the octane the cleaner it'll run am/pm gas sucks it'll cause your engine to knock some what...