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      HOW TO: 4-STROKE PISTON REPLACEMENT DONE RIGHT!

YZ250f_488

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About YZ250f_488

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    TT Newbie

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    Ontario
  1. Do you have any suggestions
  2. What do u mean by run a "Q"
  3. I have a 2004 YZ250F. I crashed hard this year and the bike hasn't been the same since. It backfires as soon as you start it up while its warming up. It backfires in every gear even when its warm. Also, its running way to hot, the mid pipe is way hotter than it use to be. I checked the carb and it was clean, also I put a new jet in it but that still didn't help. If you have any suggestions it would be much appreciated.