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Yamaha MX & Off-Road Dirt Bikes
YZ426F cold start problem / question
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[QUOTE="Hick, post: 735922, member: 19514"] They can be tempermental. If you flood the bike you can foul the plug, so you may consider checking that, although the backfire would suggest it is still working. If you suspect you are flooding the bike, pull the hot start out, then kick it over w/ the decomp. pulled half a dozen times. Then start over. You may try priming the motor by twisting the throttle, the carb has an accelerator pump that squirts gas into the carb throat when you operate the throttle. Find TDC, twist once, then kick it. In my experience this worked better than using the choke and, counterintuitive as it may seem, was less likely to foul a plug than trying to use the choke. Also, I always thought the reason they made the idle speed knob so large and accesible is they knew you would be using it regularly. My "drill" with my YZFs was always to turn up the idle about a half turn each time I started it cold, so it would idle unattended w/ no choke, and I would let it run while I put on my backpack, protector, helmet, goggles, gloves etc. For whatever reason, I found that one sure-fire way to make these bikes impossible to start is to warm it up partially and then kill the motor. :think: [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ426F cold start problem / question
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