Possible Carbon Monoxide Leak

Discussion in 'General Discussion' started by Ralph vaughn, Jan 21, 2021.

  1. Ralph vaughn

    Ralph vaughn Member

    221
    Nov 14, 2018
    Atlanta Ga
    2008 Sea Ray 290
    Raymarine Radar and GPs
    5.0 Sea Core engines and Sea Core Bravo III outdrives
    My Carbon Monoxide monitor intermittently would alarm so I replaced my salon OEM Carbon Monoxide sensor and also added a Home Depot CO sensor. Now both of my CO monitors alarm if I am running both engines and my generator. How can I check my engines for a carbon monoxide leak. I am thinking I need some device that measures CO emissions and then use on each of the engine exhausts to determine if there are any leaks. Does anyone have any ideas on how to check for engine CO leaks

    Thanks for your help in advance

    Ralph
     
  2. Mark.60

    Mark.60 Active Member

    105
    Sep 6, 2020
    Westbrook Connecticut
    2007 44 sedan bridge
    Cummins qsc 500
    Try running with gen off. If problem goes away its not the engines but gen
     
    Chris-380 likes this.
  3. Express 390

    Express 390 Active Member

    622
    Sep 14, 2018
    South Shore of Long Island NY
    1986 SeaRay 390 EC
    1993 SeaRay 290 DA single 7.4 /Bravo 2
    1992 SeaRay 230 DA 4.3LX Alfa drive
    Twin 454 Crusaders inboards 4 blades
    You don't necessarily have to have a leak sometimes if the motor is running and the cabin door is open you may get what i like to call The Station wagon effect where the fumes may draft down into the cabin . Try closing the door and all hatches and see what happens !
     
    Chris-380 likes this.
  4. 370Dancer

    370Dancer Well-Known Member

    Oct 2, 2006
    Florida - Alabama
    1998 370 Sundancer
    380hp MAG MPI Gen VI with V drives
    And with or without the A/C or heater running. Any leak between the engine room and the cabin will be amplified by the salon blower. Had this in a 1989 Carver until we sealed up all the entry points, of which there were plenty.
    your boat is new enough that this "shouldn't" be the issue, unless you have been running stuff between the engine room and the cabin space.
     
  5. Ralph vaughn

    Ralph vaughn Member

    221
    Nov 14, 2018
    Atlanta Ga
    2008 Sea Ray 290
    Raymarine Radar and GPs
    5.0 Sea Core engines and Sea Core Bravo III outdrives
    Thanks for the tips everyone.

    ralph
     
  6. dtfeld

    dtfeld Water Contrails GOLD Sponsor

    Jun 5, 2016
    Milton, GA
    410 Sundancer
    2001
    Axiom 12 MFD
    Cat 3126 V-Drives

    Attached Files:

    Last edited: Jan 24, 2021
  7. Ralph vaughn

    Ralph vaughn Member

    221
    Nov 14, 2018
    Atlanta Ga
    2008 Sea Ray 290
    Raymarine Radar and GPs
    5.0 Sea Core engines and Sea Core Bravo III outdrives
    DTFeld I didnt see an attachment or anything to identify the monitor you were referencing

    ralph
     
    dtfeld likes this.
  8. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Along the lines of what was mentioned above about the long-established, and very possible, station wagon effect, did you have any canvas up/down? Fwd deck open/closed? Speed at the time of alarm?

    When you got the alarm, did you turn the blowers on?
     
    dwna1a likes this.
  9. Ralph vaughn

    Ralph vaughn Member

    221
    Nov 14, 2018
    Atlanta Ga
    2008 Sea Ray 290
    Raymarine Radar and GPs
    5.0 Sea Core engines and Sea Core Bravo III outdrives
    yes full canvas. blower was on. Usually I get the alarm as I am backing into my slip
     
  10. dwna1a

    dwna1a Well-Known Member PLATINUM Sponsor

    Apr 23, 2012
    James River
    88 Weekender 300 "Seahorse"
    Twins 350
    It’s back drafting into the cabin. Or as Lazy says it’s station wagon. Make sure the cabin door is closed, even while at warmup or cool down my door stays closed. Also any windows (like my old SeaRay has) should be shut. Mine always goes off when the canvas is on, I make sure the vent windows are open.
     

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