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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
    2,402

    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?
    88 Bayliner with 2002 225 HP Mercury EFI

    Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.
    ​Tools to make my life easier: Battery tester, die grinder, temp.gun, compression tester, DVA meter.

    In Scenic , Beautiful San 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
    2,402

    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)
    88 Bayliner with 2002 225 HP Mercury EFI

    Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.
    ​Tools to make my life easier: Battery tester, die grinder, temp.gun, compression tester, DVA meter.

    In Scenic , Beautiful San 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
    2,402

    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
    88 Bayliner with 2002 225 HP Mercury EFI

    Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.
    ​Tools to make my life easier: Battery tester, die grinder, temp.gun, compression tester, DVA meter.

    In Scenic , Beautiful San Sebastian by the sea Florida

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