is the quad stock? how long have you had it? a aftermarket cam in a quad will make it tick like a som*****, and its annoying, if its all stock then it is the chain, take out your chain tensioner on the rightside of the block in the middle, you can miss it, and see if its maxed out, if it is then your chain is probly moving a little bit, future damage----> jumped timing tooth, valve slapping piston, bending guides, or jsut really crappy running bike. crf450 cam chain, 50$ or go to cdb motorsports . com and het a hd chain.
440ex
stage 2 hot cams
42 pilot 170 main
choke removed
motoworks sr4 slip on, sounds so good
hd cam chain
rockin the twist throttle
itp blackwaters(bleh)holeshots mxr6 soon!
outwear filter cover, 6 1'' uni filters
custom black frame and yellow a arms swing arm and hubs