i have a rx4 150 blackmax motor runs and ideals good untill i go to plane it out. it spits and sputters and then dies. if i take the cowling off the motor and run it the problem goes away. dont understand what is going on anyone know why?
i have a 150 blackmax that has troble getting on plane and will not run over 4000 rpm. while trying to find the problem i found that part of one of the magnets on the inside of the flywheel was broke. is this my problem? if so where would i find one at a reasonable price? looked up a new...
