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Yamaha MX & Off-Road Dirt Bikes
Radiator and Carb issues. . .
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[QUOTE="robwbright, post: 1373229, member: 60515"] This is going to make me look stupid, but oh well - I just want to get the bike right. . . The guy I bought the bike from is a good friend of a good friend. He told me it was an 02 and I didn't really care what year because the price was right. I finally got around to checking the VIN - it's an 03. Don't know if that makes any difference in this situation or not. At any rate, here's an update on the situation. Took bike to my father in law's garage last night. Started it and within 15 seconds the header was bright red. Began looking for air leaks between carb and cylinder. Reseated carb in boot and boot on cylinder. Seemed to help a little, but not significant. Restarted bike and ran it for about 2 minutes. Exhaust turned cherry red all the way back to the muffler. Father in law concluded it was likely tight exhaust valves. Pulled head cover and checked exhaust and intake valve clearances. (From what can be seen there, it does appear to be all new stuff in there). All clearances in the middle of the spec range. Thus we were kind of at a loss. Prayed for wisdom from God. Pulled plug. Appeared to be very lean on idle and rich otherwise. Tried fuel screw. After several adjustments, bike no longer gets overly hot immediately. However, bike is hard to start (when hot - I don't suppose that's surprising, but it was not hard to start hot when I first got it), will barely idle with choke on and will not come close to idling with choke off. Pulled carb again to clean again. That's where we left it after 3.5 hours. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Radiator and Carb issues. . .
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