CRF's Only Forums

Hello, this is my first time posting on CRF'S only. I have a 04 crf450r that is hard to start hot. It start 3rd kick everytime cold but hot is hard. If you start is cold worm it up on a ride then adjust the aftermarket fuel screw I got, then shut it off it will start first kick. Turn it off again and it goes to 4 kicks the 6-8 kicks. I have true running it rich and lean and non work. When the bike is hot it still has all the power, I shut it off hot and I still get gas, spark and compression. So I realy don't know what's wrong with it.
If anyone can help it would be very appreciated!!

Check the valve clearances. This is a typical early sign of one or more valves tightening.

Ken

Aside from checking the valve clearances, I would do a compression test.