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About randymxer65

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  1. randymxer65

    Backfiring on deceleration?

    (relating to Joshman211). My step-son got his '06 450F in Dec. '05, the first 2 tanks of breakin period the bike ran flawless. Lots of power, gets a little decel popping which sounded normal to the other 4 strokes on the track. Since on the 4th tank, air filter been cleaned, now starting to develop an accel and decel popping, thought first it was a lean problem had change the clip on main needle down from 4th to 5th position and have the air screw 1 turn out, but still gets popping. im still working with it, was just checking out on this website for info. my e-mail randywhite4@aol.com