2006 crf450r cold starting

I recently did a valve adjustment on my bike because it wouldn't start, turns out the left intake valve was completely closed, so I got that fixes but now when I try and start it cold I have to hold the hot start in and kick it for 5 or more minutes before it will start. Once its warm it starts first kick usually with out the hot start. I wondered if its something simply like my fuel screw because it has a little bit of a hanging idle now.

What does 'got that fixed' mean regarding your valves. 

Shimming doesn't eliminate leakage.

Did you replace the intakes and do a 3 to 5 angle cut to match the new valves?


New Plug

New pilot jet

Adjust fuel screw

Inspect choke plunger

Inspect hot start plunger

Edited by Krannie

like suggested start with measuring your clearances again


second make sure the carb is clean and adjusted properly with the fuel screw


when dead cold, I twist the throttle about 3 times to put a primer of fuel in the intake, with the choke on and starts first kick. 

No I didnt do a revalve just a shim job, and my carb is clean with a new spark plug. I havent checked the hot start or choke plungers, what exactly would I be looking for to see if there not working?

Edited by hartman534

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