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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
2002 wr250f
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[QUOTE="RM_guy, post: 1475578, member: 20652"] So, I'm not a 4 stroke guy but all engines require 3 things, fuel, air and spark. The fact that it starts at all tells me you have all 3 but not in the correct amount. I'd focus on fuel. Does it run better with the choke on? That would indicate a lean circuit. I am leaning towards a lean condition (no pun intended!) which could be caused by an air leak someplace or a poorly sealing valves. I know you stated that the vales are adjusted correctly but how do the seats look? Leaking valves can cause hard starting. Have you done a leak down test? [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
2002 wr250f
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