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  1. 08-03-2017, 09:29 AM #1
    Migmatic
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    6 Beep alarm for 90hp EFI

    Mercury 90HP EFI, model 1F90423HD, Serial No. 1B817185, Engine starts up fine, runs for 2kms,starts to intermittently run rough for a few mins and then alarms with 6 beeps. The engine continues to run rough. If I throttle down it will will run relatively smoothly. If I speed up it will continue to run rough. If I leave the boat over night and start it in the morning it starts up, sounds fine will run for about 2 km and starts running rough and alarms. This has been going on like clock work for the past 2 weeks. I have changed the fuel filters,bspark plugs and yesterday replaced the fuel float but no change. Any suggestions?
    Last edited by Migmatic; 08-10-2017 at 05:17 AM. Reason: Add engine information
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  2. EuropeanAM
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    Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #2 08-08-2017, 01:38 PM
    Please see the Forum Announcements, and provide the REQUIRED info. Thanks!


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