[my z wont start when cold] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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my z wont start when cold
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Posted by: suzukiman420

but if i push start and let it get warm it fires right up but dosent run right

Posted by: bellzbub

check your valve clearance. i would bet you got a couple of tight valves. and don't run it without checking them, you will do more damage.

if you don't have a manual now is a good time to get one.

Posted by: suzukiman420

do i need to replace them or reshim them

Posted by: bellzbub

if you have zero clearance then the valves need to be replaced. if you have clearance then reshim.

Posted by: suzukiman420

i took my top end to a mechanic and he said everything else was ok after he refigured the exhaust valve seats cause it was losing compression now it fires up every time but i did notice that the intake cam was tight(no clearance)can i reshim and if so what size?stock 285

Posted by: jonboy

Get a manual!!! It will give you the correct tollerances for your valve shims.