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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
HUUGE missfire YZ426F please help
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[QUOTE="RSTChris, post: 1213945, member: 79032"] hi, i recently purchased a yz426f 2001 model from ****, he said it had been recently built etc etc he gave me the old piston, rings, chain etc got it home, 2 hours use later it develops a huge missfire at any sort of revs, changed the plug and surpressor cap to no avail, checked and clean carb and that made no difference either. checked valve clearences, all exhaust were fine but the inlets all were 7thou when they should be 4 to 6thou, would this make thta big a difference? The bike ticks over perfect hot or cold if not could it be the cdi thats my problem??? any info/help greatly appreciated thanks, newbie chris [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
HUUGE missfire YZ426F please help
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