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luke8500

2004 CRF250R wont start hot

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Hi all, 

I have a 2004 honda crf250r and it wont start hot at all. The motor was just rebuilt with a new cylinder and piston. The valves were just adjusted. It will start cold in 1 or 2 kicks with choke but as soon as it gets hot it wont start. If you bump start it the motor will just turn over without starting.  sometimes it will start. It runs great until you shut it off.  im thinking its either a fuel issue or an electrical issue. Any help would be greatly appreciated. 

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Posted (edited)

What is your fuel screw setting?

 

Also confirm the order of assembly is correct:   needle -- spring -- washer -- o-ring

Edited by mlatour

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54 minutes ago, mlatour said:

What is your fuel screw setting?

 

Also confirm the order of assembly is correct:   needle -- spring -- washer -- o-ring

the fuel screw is assembled correctly and set at 2 turns out. Bike runs perfect other than this hot starting issue

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Is there a wire that is grounding out.  I have seen engine heat cause a wire to ground out (wire expands just a little and lowers a few mm and then melts against hot engine or exhaust.

When its hot and not starting, is the plug still sparking?  Is the plug dry or wet?

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