[Instant Start.... bump start????!!!!!] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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Instant Start.... bump start????!!!!!
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Posted by: stuntman_12

I have the 42mm 450R carb.... My 416ex WILL NOT start by itself when it's cold. BUT!!!! When i have it pulled or bump started it instanly fires and runs? ....

It also back fires a good bit still. I have a dyno170 main, stock 48 pilot, a/f 3 turns out, and the needle on the third notch.

The throttle seems to "stick". It revs very quickly, then slowly settles back down to a kind of rough idle.

Any suggestions?????????????????????????????????

Posted by: 450rJam

check compression.

Posted by: rooster_20

Your throttle cable could be messed up that could be the sticking part..