rev problems

  1. moto17

    Challenger wont plane out?

    Help! I just put a SBT motor in my boat, new carbs as well and new fuel lines and on/ reserve switch , (super bn same as stock) after learning how to do the timing I installed the motor. I lake tested it starts great!. But it will run up to 6000 ,6500 and will only do this for a second or...