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  1. #1

    Default What could be the issue with 50HP mercury outboard motor to run slow in water

    Hi all friend

    Just a quick question and wondering what could be the issue for 50HP mercury outboard motor to run slow and not fast in the water the way it should be.

    I serviced Carburetor on 2 stroke 4 cylinder mercury motor.

    Any suggestion would really help.


    Thanks

  2. #2
    Join Date
    Sep 2010
    Posts
    19,435

    Default Re: What could be the issue with 50HP mercury outboard motor to run slow in water

    Could be ----Water in the fuel.-------Bad sparkplug.------Low compression.----Exhaust plugged.-----Overheating.-----Carburetors not opening all the way.------Timing issues.-------Year / serial # of you motor ?-----I am about 3 hrs from TO

  3. #3

    Default Re: What could be the issue with 50HP mercury outboard motor to run slow in water

    Quote Originally Posted by racerone View Post
    Could be ----Water in the fuel.-------Bad sparkplug.------Low compression.----Exhaust plugged.-----Overheating.-----Carburetors not opening all the way.------Timing issues.-------Year / serial # of you motor ?-----I am about 3 hrs from TO
    Mercury thunderbolt 50hp
    Serial number: 7134221.

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