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  1. #1
    Member
    Join Date
    Dec 2015
    Location
    beckley west Virginia
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    23

    Need help 150 merc pro xs

    Having isue with while running it has a bad miss like the motor completely shuts off and back on need to narrow down a few ideas on whats wrong with it thinking could be ground wire or pcm

  2. Member 06 SB's Avatar
    Join Date
    Feb 2012
    Location
    West Point Lake, GA
    Posts
    11,003
    #2
    You need to post serial number to get experts help. There are SO many things it could be. How old are the fuel lines? When and what was the last maintenance completed? How old are the spark plugs? Any alarms?

    USN Retired
    2020 Basscat Caracal
    2020 Mercury 225 ProXS 4s



  3. Member
    Join Date
    Dec 2015
    Location
    beckley west Virginia
    Posts
    23
    #3
    Its a 2014 always grage kept i run premium fuel in it with fuel treatment everything is factory never had a tune up yet or any problems water presure is perfectn between 12 and 15 pounds

  4. Member
    Join Date
    May 2011
    Location
    Spangle, WA
    Posts
    6,212
    #4
    Quote Originally Posted by 06 SB View Post
    You need to post serial number to get experts help. There are SO many things it could be. How old are the fuel lines? When and what was the last maintenance completed? How old are the spark plugs? Any alarms?
    ^^^^

    We need more info than you've provided to begin to help. If you've owned it since 2014 and have never replaced the spark plugs or water pump, you are overdue for both. When you peruse the topics below pay close attention to the recommended octane for your engine. The FAQ is full of useful information:

    Recommended Annual Maintenance or Winterization for Optimax Engines

    Compressor STRAINER Cleaning

    FUEL LINES AND PERFORMANCE PROBLEMS

    Oil, Battery, Spark Plugs, Fuel and Fuel Additive Recommendations

    "BATTERIES THAT MEET THE REQUIREMENT" - Reserve Capacity Monsters!

    WARNING HORN "BEEPED"
    _______

    Phil
    '09 Hewescraft ProV
    '09 150 Optimax