Possible Carbon Monoxide Leak

Ralph vaughn

Member
Nov 14, 2018
259
Atlanta Ga
Boat Info
2007 Sea Ray 290 radar & GPS, triple axle trailer. 2006 Sea Ray 280 radar & GPS & triple axle tlr
Engines
5.0 MPI closed cooling Sea Core engines & Bravo III outdrives
4.3 MPI with alpha 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
 
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
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 !
 
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.
 
Thanks for the tips everyone.

ralph
 
Buy a couple of these. The will tell you the max detected CO ppm. Might help diagnose.

CO.PNG

https://www.kidde.com/home-safety/en/us/products/fire-safety/co-alarms/kn-copp-b-lpm/

Be careful. I would assume new CO monitors are correct until verified otherwise.
 

Attachments

  • upload_2021-1-24_19-8-18.png
    upload_2021-1-24_19-8-18.png
    62.9 KB · Views: 88
Last edited:
Buy a couple of these. The will tell you the max detected CO ppm. Might help diagnose.

Be careful. I would assume new CO monitors are correct until verified otherwise.
DTFeld I didnt see an attachment or anything to identify the monitor you were referencing

ralph
 
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?
 
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?
yes full canvas. blower was on. Usually I get the alarm as I am backing into my slip
 
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.
 

Forum statistics

Threads
112,948
Messages
1,422,805
Members
60,930
Latest member
Ebrown69
Back
Top