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  1. #1
    Member
    Join Date
    Jul 2017
    Location
    Bend Oregon
    Posts
    99

    Mariner 175 bogs and stutters with throttle.

    Serial # 6620136 Stamped as a 175hp
    I've been told it's an 85, or 89- could anyone confirm?
    25p Quicksilver stainless prop
    1985 Champion 184

    Bought the boat last summer, and it never really got to full power or rpm- most I've seen is 4200rpm or so. Now this last fall and winter it does this weird bog/surge/stutter thing when given more throttle than enough for 2000rpm. It doesn't always happen, but more often than not; sometimes it will do this malfunction, then pop right up on pad running 4000 rpm or so. In the youtube video you can see it runs fine if I keep it under 2k-rpm, but bogs and surges with more pedal applied.



    I've pulled and cleaned both fuel tanks, replaced all fuel lines to the motor, and installed a new fuel filter/separator. Is it time to pull and clean the carbs, or am I looking at something more serious?

    Also, any sources on a factory manual for this motor?

  2. Member
    Join Date
    Jul 2017
    Location
    Bend Oregon
    Posts
    99
    #2
    Ebay had a clean used factory manual number 90-97658--3 for serial# 5464486 up... should be here next week.

  3. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    13,941
    #3
    check compression then spark all 6 could be carbs basics first
    .................................................. ...the scariest thing in life is the unknown ...................................