ticking

[nicktrx400ex]

i have a ticking noise in my 400ex and its from the motor but where and is it bad its not loud just can hear it

[dunny_mark]

Most likely your valves. Check the lash.

[nicktrx400ex]

wats a lash?

[dunny_mark]

Also known as Valve Clearance. It's a regular practice on these dam fourstrokes.

[dunny_mark]

Check out the "How To "forum- it will explain everything you need to know on how to set the clearance.

[1987 trx350x]

first to adjust the lash, you need to remove the valve rocker caps on the cylinder head. then you need a feeler guage, screwdriver, and a wrench. the feeler guage, you need the correct clearence # to fit between the valve syem and rocker arm. then with the wrench loosen the jam nut. after that tighten the screw untill you feel a little friction with the feeler guage. you are correctly adjusted. finnally, tighten the jam nut.

[1987 trx350x]

o, yes. make sure the piston is at top dead center, on the compression stroke.

buy better gas :p :D

[below100hz]

i had some really bad ticking on my bike, then i started burning tons of oil so i did a 426 kit and had the guy at the machine shop check my valves and both intake valves were junk, so maybe its the valves

[guinness77]

Could be a stuck disconnector. Checking the valves usually fixes this.

[1987 trx350x]

ur decompression lever could be stuck

[nicktrx400ex]

its a 03 but has only 10hrs on it and gas we run 93 always nothing more nothing less valves could need adjusting

[1987 trx350x]

then its most likey your valve lash. motorcycles need this type of routine maintenence.

[nicktrx400ex]

yea ill get my dads friend to take a look at it hes a good mechanic and was in the army wrking on motors and stuff so he will know.