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  1. #1

    2009 Fx Sho High Idle

    Hey! I have a 2009 Fx Cruiser Sho that isles around 2k out of the water ..

    Is this normal or should I look into that further ?

    Compression is 125 120 120 125

    Thanks !


  2. #2
    CHINE WALKER nicor6's Avatar
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    Quote Originally Posted by Mrkheiser View Post
    Hey! I have a 2009 Fx Cruiser Sho that isles around 2k out of the water ..

    Is this normal or should I look into that further ?

    Compression is 125 120 120 125


    Thanks !
    sounds like throttle damper is cracked causing an air leak resulting in high idle. They are prone to cracking. You need one of these

    Billet Throttle Body Mount for Yamaha 1.8L

    Throttle body mount for the Yamaha 1.8L Waverunners uses billet aluminum construction, CNC machined, and is anodized red. Includes stainless steel...
    Billet TB Mount $85.00


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  4. #3

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    125psi seems high....86psi in service manual could be the gauge...

    if you decide to replace the mount be prepared for a fight.....mine didnít want to come off even after it split

  5. #4
    AWESOME thanks for the info however the situation has changed .. Iím going to accept that I misread the dash and read the 20 as 2000 rpms when really it was 12-1300 rpms

    So idle is correct in terms of RPMS but it seems to idle a bit rough bouncing from 1200-1300 possibly more movement ..

    Would this indicate the same part broken ? Or does this sound ok ?

    Thanks

  6. #5

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    1200rpms sounds normal ish for a cold engine out of the water (no load on prop) check the manual for idle also the emissions sticker inside the hull!

  7. #6

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    1150-1350 for idle so 1200 is spot on....

  8. #7
    Does your Yamaha 1.8l idle bounce while out of water?

  9. #8

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    Yes with no load on prop it’s goes up and down a 100rpm or so I guess....

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