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  1. #1

    Post 2012 300 running ok but black stacking (to rich)

    Runs good but sut
    all over the back of the boat?

  2. #2
    Join Date
    Jun 2008
    Location
    Island Heights, NJ,
    Posts
    2,566

    Default Re: 2012 300 running ok but black stacking (to rich)

    No where enough information for a useful answer....
    Capt Bob
    1969 23ft ChrisCraft Lancer
    Merc 5.7L 260HP/ Volvo 280
    1972 22ft Bristol
    Honda 7.5HP 4 stroke Long shaft

  3. #3

    Default Re: 2012 300 running ok but black stacking (to rich)

    I agree with Sandkicker, not enough information. 300 hp vp is probable a 5.7. Check fuel psi, sounds like a regulator malfunction. Check to see if regulator has screen or eclip. Best guess with out more info.

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