by Rpmp3 » Wed Nov 15, 2017 10:51 pm
kawasaki FB460V-ES36 Gravity fed, surging at high rpm, I am have a surging issue at high rpm so I removed carb and all jets, soaked in carb cleaner, bough new needle, bowl gasket and bowl nut gasket, New air filter, pre filter, and New fuel filter, used twisty to clear all holes even took out jet on top of carb cleared passages, then blew out with air, same result while running sprayed carb cleaner around carb and gaskets no difference in performance come to think of it I didn't spray or blow the breather tube, turned adjusting screw 1 1/4 turns out to start no matter where the adjustment screw position same result. Runs smooth at idle but surges at high speed, New air filter, pre filter, and New fuel filter, could the breather tube cause a surge.