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Yamaha fuel management not working

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  • Yamaha fuel management not working

    I have a Yamaha fuel managment for a pair of 2002 f225txra that isnt working. It shows - for gph and mpg. I've check wiring at gauge an at flow sensors an dont see a problem. Do yall think flow sensors are bad? Is there a way to test them? Thsnks

  • #2
    Replaced one about four years ago and just had another one quit...a friend of mine said he got his to working by flushing it wirh seafoam...may have a little gunk in it. Doesnt take much.

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    • #3
      I never tried it, but a meter set to Hz may be able to read the square wave generated.
      a scope should show if it has an output signal

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