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Everything Dirt Bike
Make / Model Specific
Yamaha
2003 WR450F issues
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<blockquote data-quote="2strokesteve89" data-source="post: 171933" data-attributes="member: 1670"><p>The running hot thing......is it the exhaust pipe that's hot, or the engine, if it's engine, I'd be looking for a head gasket issue, or maybe ign. Timing....if it's exhaust hot, then sounds like it's running lean at idle.i know you checked some of this stuff already, but if I was checking it, that's where I'd start. Also if the air/fuel screw won't work then either the passage Is plugged or there is a vacuum leak.</p></blockquote><p></p>
[QUOTE="2strokesteve89, post: 171933, member: 1670"] The running hot thing......is it the exhaust pipe that's hot, or the engine, if it's engine, I'd be looking for a head gasket issue, or maybe ign. Timing....if it's exhaust hot, then sounds like it's running lean at idle.i know you checked some of this stuff already, but if I was checking it, that's where I'd start. Also if the air/fuel screw won't work then either the passage Is plugged or there is a vacuum leak. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
2003 WR450F issues
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