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  1. #1

    question about decarbonizing on 05 f12-x

    will it mess the turbo up if i run engine cleaner through the motor? this is the first honda ski i have worked on. the spark plugs after running it 10 min. are carboning up to the point it will only go 35 but runs 63 when i put fresh plugs in.


  2. #2
    JRINJAX's Avatar
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    If you let it warm up before shutting it down, the ECU stops enrichment once the OTS [oil temp] warms up. Your plugs won't foul as often.

  3. #3
    Waveblaster's Avatar
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    Not sure if plugs could be related but make sure your running 93 octane gas in these engines

  4. #4
    yeah it has 93 in it and the plugs are what is recommended for it but it still carbons them up after 10 min. of running it.

  5. #5
    JRINJAX's Avatar
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    Many times they are black but they should not be fouled easily. Cutting down my velocity stacks made mine leaner, but Nitro says it could move your power band [it didn't on all 3 of mine].

  6. #6
    Jake Speed's Avatar
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    Quote Originally Posted by seadooRXP2590 View Post
    will it mess the turbo up if i run engine cleaner through the motor? this is the first honda ski i have worked on. the spark plugs after running it 10 min. are carboning up to the point it will only go 35 but runs 63 when i put fresh plugs in.
    seadooRXP2590 It sound like a fuel pressure regulator diaphragm went bad! 1 put ski on the hose 2 start it up 3 find the Vacuum Hose on the regulator and pull it off if gas starts comming out that your problem.

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