When under stress engine start popping

EasybeeEasybee Member Posts: 21 ✭
in General Boating Discussions
2005 Rinker Fista Vee with two 350 mercury engines. Took the boat out on Monday. Leaving the slip, everything was fine. About four miles, bow engine started acting crazy making a intermittent popping sound. At first, I thought it was the carburetor and backfiring. If anyone experience this type of issue, what is it and how to resolve? 
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Comments

  • Rich_Rich_ Member Posts: 222 ✭✭✭
    Sounds like lean pop could be your issue. Did this just start after a winter storage? When was the last time all fuel filters were changed? Ever had the carburetors cleaned?
    Rinker sold but still have other boats        Eastern LI, NY
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  • Dream_InnDream_Inn Member, Moderator Posts: 7,706 mod
    Definitely sounds like you need new plugs.  I had this exact same thing happen to me once and buddy a couple times. Every time new plugs solved the issue.

    Dream 'Inn III -- 2008 400 Express

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  • aero3113aero3113 Member Posts: 9,176 ✭✭✭✭✭
    I’ve had that happen and it was gone when I replaced the cap and rotor.
    2008 330EC
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  • YYZRCYYZRC Member Posts: 5,193 ✭✭✭✭✭
    Given that it’s a 2005, I assume it is MPI and not carb. How old are the plugs/cap/rotor?
    2008 350 EC on Georgian Bay
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  • mattiemattie Member Posts: 1,297 ✭✭✭✭
    All above correct. Start with cap/rotor/plugs.
    Sounds like the world is coming apart when it happens underway.

    @Easybee - sounds like an odd Rinker with a bow engine! lololol.
    246BR, 276BR, H310BR current
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  • FormulabenFormulaben Confirm Email, Member Posts: 151 ✭✭
    edited April 17
    I'm beating a dead horse here, but spark plug wires do lose conductivity with time and seem to be forgotten during preventive maintenance. Before spending another dollar or another minute of your time on this I would change plugs, wires, cap and rotor if they haven't been done very recently and be sure to use a marine grade cap & rotor. I'd also consider replacing fuel filters if not done recently.
    Post edited by Formulaben on
    2006 Fiesta Vee 270
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  • Rich_Rich_ Member Posts: 222 ✭✭✭
    Easybee said:
    At first, I thought it was the carburetor and backfiring. 

    Rinker sold but still have other boats        Eastern LI, NY
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