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  1. 06-11-2015, 06:27 PM #1
    reelloewater
    reelloewater is offline
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    150 Pro XS Running Irregularly at mid throttle

    Running a 150 Pro XS in saltwater for about a year (100 hrs) and it has started to cut in and out in the mid throttle range. Already had fuel pump replaced after original died with very few hours on the motor. Worked fine with new fuel pump for a long time. Now it runs fine at idle and wide open but surges and slows down dramatically at the mid range throttle positions? Is this a fuel injection problem? Bad Coil or plug?

    Any clues on how to fix this? Common Problem?

    Thanks for the help!
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  2. Savage
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    #2 06-11-2015, 08:30 PM
    Please read this before posting.......Announcements - Mercury - 3 Liter & 3 Liter High Performance
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  3. EuropeanAM
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    #3 06-12-2015, 05:28 AM
    Welcome to BBC!

    Please do see the Announcements. One of us will be happy to assist once the necessary info is provided.

    In your case- really good idea to provide your BOAT info as well.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
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