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2000 yfm250 beartracker popping & backfiring

Randy_Scott

By Randy_Scott
in Yamaha ATV Forum

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Randy_Scott Newbie

Randy_Scott

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CDI teasted bad and was replaced with new, it ran fine for about 10 minutes then started acting like it was running out of gas, main jet was plugged so I had carb rebuilt and replaced manifold with new one. Now the popping and backfiring is back at mid-throttle. Has new plug and decent spark. Idles and runs fine at low throttle. Anyone have any thoughts?

Thanks

Randy

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ChristianWarrior4 Rookie

ChristianWarrior4

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I'm in the same boat with my 99 350 Wolverine. My notes say if it's a slight problem, lower the needle down. If it's a severe problem, lower needle, and install smaller jet. I'm in the middle of fixing mine right now. I will hit you back with my findings.

Sorry Bro, went to reinstall my carb, and I broke my intake. It's on order now, and when I test I'll hit ya back up, and let you know what happened.

Edited by ChristianWarrior4
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