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Originally Posted by PA Jim
I recently scooterized my 800 classic (sort of) I made my own backplate, I did not modify existing one. I used a .165 main jet, .050 pilot jet with the misture screw out 2 1/2 turns. I am getting a backfire through the carb when giving it just a little gas. It runs fine during harder acceleration. Any help would be appreciated.
Thanks,
Jim
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I'm betting it's an air leak either between the carb and air filter or between the carb and the intake boot. the rubber boot is known for causing problems just like this. Have you already removed the epa crap( i'm assuming you have)I'd probably turn the mixture screw in a half a turn also.Set your idle up a bit as well.