99yam40's latest activity

  • 9
    99yam40 replied to the thread 2018 Yamaha 40 HP, Poor top Speed.
    what does this mean .sounded as if a Muffler fell off exhaust goes out the prop under water so it should be not loud. maybe the motor...
  • 9
    99yam40 replied to the thread Please help with HPDI issues.
    if everything is in spec but still running too rich, then you may need to try another ECU did you have the injectors tested/cleaned...
  • 9
    99yam40 replied to the thread Please help with HPDI issues.
    you still have not said what the rail pressure is at or if the ECU knows when the motor is in gear
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