Fuel Anti Syphon Valve Thread Size

tazataza Member Posts: 64 ✭✭
in Rinker Express Cruisers Forum

any one know what size the thread is on the fuel anti syphon valve is

2007 Rinker Express 280


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  • jme097jme097 Member Posts: 1,224 ✭✭✭
    I am not aware of an anti syphon valve on the 280? LOL but @Cableguy Greg would lol
    Boat Name: Knot A Worry
    2007 280 Rinker Express 6.2L B3
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  • Cableguy GregCableguy Greg Member Posts: 5,025 ✭✭✭✭✭
    That is one that I don't know about. @Alswagg would know for sure.
    2008 280 Express Cruiser, 6.2MPI, B3, Pittsburgh, PA "Blue Ayes"
    Go Steelers!!!
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  • zaverin1zaverin1 Member Posts: 1,672 ✭✭✭
    Not sure of the size but it can be googled or measured at the boat.
    i assume he is referring to the check valve at the fuel tank pickup tube
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  • zaverin1zaverin1 Member Posts: 1,672 ✭✭✭
    When I did my sending units I removed and checked them

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  • jme097jme097 Member Posts: 1,224 ✭✭✭
    @zaverin1 where exactly are the valves at in relation to the senders? I did my sender last spring when I converted to smartcraft and I didn't see anything
    Boat Name: Knot A Worry
    2007 280 Rinker Express 6.2L B3
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  • tazataza Member Posts: 64 ✭✭
    Its the valve that the main fuel line is attached to that feeds the fuel pumps
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  • jme097jme097 Member Posts: 1,224 ✭✭✭
    The valve is on the line that goes into the fuel cool module? I would think it would be further upstream than that
    Boat Name: Knot A Worry
    2007 280 Rinker Express 6.2L B3
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  • zaverin1zaverin1 Member Posts: 1,672 ✭✭✭
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  • zaverin1zaverin1 Member Posts: 1,672 ✭✭✭
    Right out of the tank 90deg pickup tube 
    this valve screws in 
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  • jme097jme097 Member Posts: 1,224 ✭✭✭
    AHHHHHH I know what you're talking about now. Thats crazy. I never knew that was a valve. Thought it was just a regular brass fitting
    Boat Name: Knot A Worry
    2007 280 Rinker Express 6.2L B3
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  • zaverin1zaverin1 Member Posts: 1,672 ✭✭✭
    Now why you want it replaced 
    fuel draining back?
    Grab the 90 deg fitting which is the pickup tube 
    with one wrench then slowly unscrew the valve with other 
    unscrew it and then suck in and then blow out
    should only work one way
    when you suck in put your tongue and see if it holds suction
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  • zaverin1zaverin1 Member Posts: 1,672 ✭✭✭
    In my other thread I noted the gas dock fill up after replacing two sending units last fall.
    according to my oem Gages
    i was within 5 plus or minus gal which is 
    good in my book 

    when i replaced sending units I also had to remove check valves for clearance.
    carb models rely on them to keep fuel in the line for easier prime even with electric fuel pumps.
    reason for sending unit replacement was fuel gages bouncing on plane and port reading only to half tank and dropping to e after 
    On top of that old owner had tank wires reversed at gage cluster so port was star and star was port lol
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