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I figured you have some experience.

I would check the float level in the carburetor and be sure it's not starving at full throttle.

Backfiring makes me think lean condition.


To be honest, I get to a certain point with a chinabike component and replace it. Items from china are so cheap, I have replaced entire electrical systems for less than $30.

If it were me, I would install a new carb and never think about it again. I picked up 3-4 from ebay at $15 each.

Search PZ30 and find a carburetor with the correct intake manifold configuration.-BIG DAN:thumb:


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