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Thread: 85 hp force

  1. #1

    Default 85 hp force

    I have a 89 85 hp force ive replaced the water pump and put carb kits on all the carbs it will start only if i hold the choke and then it dies can anyone help figure out whats wrong

  2. #2
    Join Date
    May 2010
    Location
    Sebastian ,Fl
    Posts
    2,599

    Default Re: 85 hp force

    Sounds like the rebuild wasn't done right??
    The air screws set at 1 and 1/8th turn out?
    Missing gasket?
    Fuel pump diaphragm bad?
    PLEASE,NO PERSONAL MESSAGES IF THE QUESTION CAN BE ASKED ON THE OPEN FORUM
    88 Bayliner with 2002 225 HP Mercury
    Buy American made Cars and Trucks!!!Towing insurance,get it.
    In Scenic Beautiful Sebastian by the sea Florida

  3. #3

    Default Re: 85 hp force

    Thank you jerry i know the carb kits are right it was only a bowl gasket and i set the mixture screw at one should it be 1 and eighth

  4. #4
    Join Date
    May 2010
    Location
    Sebastian ,Fl
    Posts
    2,599

    Default Re: 85 hp force

    I should have said: the carb cleaning might not have gotten the low speed system cleaned right.
    The initial setting should be 1 1/8 to 1 1/2
    Then adjusted from there.
    The factory sent out a bulletin that all 85' 1985-1990 should be set at 1 turn out and left there.
    BUT!! I've found some work better at 1 1/8
    One of my customers his 85/85 wouldn't run unless they were set at 3 turns out.

    Set at 1 1/8 and adjust from there.
    Motor warm and in water, preferably in gear.
    RPM's about 750-800 (final setting)
    PLEASE,NO PERSONAL MESSAGES IF THE QUESTION CAN BE ASKED ON THE OPEN FORUM
    88 Bayliner with 2002 225 HP Mercury
    Buy American made Cars and Trucks!!!Towing insurance,get it.
    In Scenic Beautiful Sebastian by the sea Florida

  5. #5

    Default Re: 85 hp force

    Thanks again jerry ive notice something else im wondering if my fuel pump diaphragm is bad because when i pump my bulb the gas pours out of the bottom carb

  6. #6
    Join Date
    May 2010
    Location
    Sebastian ,Fl
    Posts
    2,599

    Default Re: 85 hp force

    That's the needle in the carb not seating.
    Clean the carb.

    Then install a filter between the pump and the carb.
    Fram G-2 G-3 G-12
    PLEASE,NO PERSONAL MESSAGES IF THE QUESTION CAN BE ASKED ON THE OPEN FORUM
    88 Bayliner with 2002 225 HP Mercury
    Buy American made Cars and Trucks!!!Towing insurance,get it.
    In Scenic Beautiful Sebastian by the sea Florida

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