Through hull fuel vent

Discussion in 'General Maintenance/Repair Questions' started by Tclark18, Aug 12, 2020.

  1. Tclark18

    Tclark18 New Member

    10
    Jul 29, 2020
    2001 Sea Ray Weekender 225
    5.0 Mercruiser Alpha Gen 2 O/D
    Question: I have a 2001 Sea Ray 225 weekender and am wondering if the through hull fuel vent on the starboard side simply screws off? I dont want to kink what ever is on opposite side of hull when screwing off. Is it directly attached to a hose and not secured internally? How do I access it from inside of boat?.....Reason is I believe I have a fuel starvation issue and want to check....
     
  2. techmitch

    techmitch Well-Known Member GOLD Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
    Sorry I can't help with the vent removal but as to your starvation issue, try running with the fuel cap off.
     
  3. Tclark18

    Tclark18 New Member

    10
    Jul 29, 2020
    2001 Sea Ray Weekender 225
    5.0 Mercruiser Alpha Gen 2 O/D
    Thats my plan until I get vent off...It only happens after I fill tank and cruise above 3000 rpm....When fuel level goes down I have no issue.
     
  4. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Based on your posts, it sounds like you you heave already verified that the vent system is the issue? There's typically no reason to remove the fitting as it's almost never the problem. But, there's a nut on the back side - and of course the hose is attached. Google for pictures and you'll see.

    Check the vent line - look for low spots where excess fuel can accumulate from filling up too much. Also check the vent fitting screen for old wax and/or debris/bugs nests.
     
  5. Tclark18

    Tclark18 New Member

    10
    Jul 29, 2020
    2001 Sea Ray Weekender 225
    5.0 Mercruiser Alpha Gen 2 O/D
    Lazy Daze...Thanks for the reply. I am not positive that venting is the issue. It's just all that I have read kind of points me in that direction. I will check the vent line, anti siphon valve too. It seems to only occur after I fill tank. Both times what I did was shut off engine for a few sec, re start and all was fine....Thoughts?
     
  6. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    I'd just start with the suggestions given here. They will narrow things down. Doubtful it's AS valve as that would cause issues all the time.
     
  7. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Your probably filling the tank higher than the vent fitting on it.
     
  8. Tclark18

    Tclark18 New Member

    10
    Jul 29, 2020
    2001 Sea Ray Weekender 225
    5.0 Mercruiser Alpha Gen 2 O/D
    I will definitely check that out......Thanks...I will report back any findings....
     
  9. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Certainly not uncommon for new boaters. Gotta listen for that "gurgle". Or install a whistler.
     

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