Idle speed adjustment, merc 240 EFI - Seadoo Forums

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  1. ☑ ORIGINAL POSTER #1
    Senior Member seadoodude1's Avatar
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    Default Idle speed adjustment, merc 240 EFI

    The idle speed has gone down to where it wants to stall before I can shift it to reverse or forward and give it some throttle. Is the reduced idle speed an indication of something I need to look at?

    I looked at service manual to see how to adjust idle and just got confused as to what exactly to adjust. How do you adjust idle or should I be looking at something else that is the cause?

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  3. #2
    rookie101's Avatar
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    Default

    The ECM should control that for you. If the problem started fairly suddenly start by changing the spark plugs.

    Aaron
    Looking for parts for your Doo?? Click HERE





    Find your Mercury M-2 motor and pump parts here!

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  4. #3
    Senior Member johnhibbs's Avatar
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    SeaDoo Challenger 2000, year 2001, 240 EFI
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    Default Trick to increase idle speed

    I have had a problem starting my boat sometimes when it is warm. I discovered a trick to give the boat more gas when it is in nuetral. When you turn the steering wheel hard CCW or CW it will give the boat more gas. I don't know what the problem is though. On my boat I think the starter may be getting old.

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