06 LTR450 Hard to start with low end miss.

Suzuki

Have a 06 LTR450 with fresh top end rebuild and head. Cam timming and valve clearance are correct. Have to give it 1/4-1/2 throttle to start. Has a very bad low end miss. Once it gets up to mid range it quits missing and seems to run fine if you stay in the throttle. If you let out it will drop to a slow idle and die almost instant.

Thanks in advance

Could be a lean pilot jet. Did you do anything to require more jetting? Does it backfire on decel? Any chance of an air leak?

sounds like valve clearances are off.this bike is fuel injected,no carb

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