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  1. Engine, Carburetor, Fuel System & Exhaust
    So I recently cleaned my carb and everything seemed to be running well. I have a jardine exhaust on my 2005 250 and one side, or pipe rather has turned quite blue. I also get some backfiring when I left off the gas and I come down into the lower end of my rpm's. SO I'm wondering if I'm running a...
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