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  1. 07-27-2022, 07:54 AM #1
    RyanJ
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    2011 Honda BF90 rough low idle

    I have a 2011 Honda 90 4 stroke fuel injected motor that idles very rough at low idle. 650 to 1000 rpm range. Idles fine in neutral. All other rpm range above 1000 it runs great. WOT at 6300 which is max for motor from my research. So far all I have tried is new plugs but no improvement. Motor shakes and almost acts like it wants to die at that lowest rpm spot. Can bump throttle and work past it. Any ideas? Thanks for any insight.
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  2. Hickory Legend
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    #2 07-27-2022, 10:17 PM
    Have you changed the fuel filters water separators? Also may want to check your coils to make sure they are checking good.
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  3. RyanJ
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    #3 07-28-2022, 08:07 AM
    Quote Originally Posted by Hickory Legend View Post
    Have you changed the fuel filters water separators? Also may want to check your coils to make sure they are checking good.
    I have not changed the fuel filters or water separators...I should do this as I believe the prior owner said he last did in 2017. He hardly used the boat/ran motor.
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