thanks for the advices ,but the first thing i did when putting the Xs back on the road 1. i had the engine flushed 2.fuel cleaner 3.brand new ignitions coil from the stealer 4. i clean the throttle body 5 .the gas i used is shell. the only thing i didn't do is change the spark plugs. The Xs feel like it wants to take off but something is holding it back a little . 6. i cleaned the air filter. could it be the gas filter?