Yamaha 9.9 trouble

Discussion in 'Boat Repair Help' started by coke1, Jul 3, 2007.

  1. coke1

    coke1 New Member

    Messages:
    13
    State:
    oklahoma
    I think I found what is going on. The dealer said I needed a new coil, but wasn't convenced. Took the boat out to the lake and started the moter with one plug wire off, it started but ran rough. Replaced that wire and pulled off the next and the moter wouldn't start. Is it the coil thats bad or is there something that gives it spark. Also has new plugs.
     
  2. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
    The coils should be seperate so take the wires loose from each coil and swap cylinders and if the miss followes it then the coil would be suspect.