On my 1984 43MY the reserve tank keeps getting over full when I haven’t added fuel. The only thing I can think of is that fuel is somehow bleeding down from the main tank. Maybe leaking by the the fuel selector ball valves? Anything else possible? I think this may be causing a diesel smell in the aft cabin.
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Thread: Reserve fuel tank is over full
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04-02-2020 07:58 PM #1Registered Member
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- Jun 2019
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Reserve fuel tank is over full
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04-02-2020 08:00 PM #2
Re: Reserve fuel tank is over full
check the return valve and make sure it is working properly
Mis b' havin
1972 58 yachtfish
58yf352
pass christian, ms.
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Re: Reserve fuel tank is over full
You have both motors returning fuel to one tank.
SEVEN
1979 53' MY Hull #563
Antioch, California
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04-03-2020 10:29 AM #4Registered Member
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- Jun 2019
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Re: Reserve fuel tank is over full
The problem happens when the motors are not running. I reduce the amount in the reserve tank by running the engines from it and returning to the main tank.
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Re: Reserve fuel tank is over full
Wanna sell that boat? I've always dreamed of having a boat that made its own fuel.
Sky Cheney
1985 53EDMY, Hull #CN759, "Rebecca"
ELYC on White Lake--Montague, MI
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04-06-2020 03:35 PM #6Senior Member
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- Jul 2013
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Re: Reserve fuel tank is over full
Any chance it's water getting in instead of fuel? Water would displace the fuel up. I'd probably try to suck some fuel off the bottom of the tank and see what it looked like.
SOUTHPAWS
1986 52C Hull #391 8v92TI
PENSACOLA, FL
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04-07-2020 07:12 AM #7Registered Member
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Re: Reserve fuel tank is over full
Not water, it happens too quickly.
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Re: Reserve fuel tank is over full
Seems to me that the reserve tank has to be gravity fed by a main tank if this is happening while the boat is sitting still with the engines not running. That would be pretty dumb to have plumbed it that way. Is this supposed to be a factory installed reserve tank?
That may just be your terminology.Randy Register - Kingston, TN
www.yachtrelocation.com
www.Safes4Guns.com
aka Freebird aka Sparky1
1965 41DC #93
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04-07-2020 02:36 PM #9Senior Member
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- Jul 2013
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Re: Reserve fuel tank is over full
I'd lean toward a bad valve. I would disconnect the forward tank from the valve manifold and see which valve(s) was leaking, that should give you a very quick answer.
You could disconnect the hose at the valve manifold or at the tank, whichever is easier to access. Either will give you your answer relatively quickly.SOUTHPAWS
1986 52C Hull #391 8v92TI
PENSACOLA, FL