Fuel Filter inside our gas tanks

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Fuel Filter inside our gas tanks

Postby Trowerpower » Sun Jul 26, 2020 7:27 am

Having a fuel delivery problem on our 1987 32ft sedan fly bridge. Is there a filter inside the tank? I believe my fuel pump is the problem. We have two 75 gallon tanks. The starboard engine is running great.Thanks your imput in advance.
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set

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Location: Grosse Ile MI

Re: Fuel Filter inside our gas tanks

Postby bill » Sun Jul 26, 2020 8:34 am

On both my 1974 and 1975 Marinette's there were no filterers or screen on the pick up inside the fuel tank.
Only the stone filter after the tank and the small canister inline filter at the carb.
What pressure are you getting at the carb :?:
4 psi should be the minimum when ruining balls out.
Grosse Ile MI
Located on LakeErie
37' F/B Sedan
Twin 360 Chrysler Marine
Raw water cooled
Hydraulic steering both helms
USCG Master Lic. Retired

Third Owner bill

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Re: Fuel Filter inside our gas tanks

Postby Tuggle » Mon Jul 27, 2020 5:44 am

We have one 120 gallon tank with two pickups on either side and the gauge in the center. Thought I had a pickup problem as well, turned out to be one of the anti-siphon valves, changed both out, ran perfect. Try running the port engine off the starboard tank.
"Deplorable", 1975 32' Express, Twin 318's, Raw Water Cooled, Lake Lanier, Ga.

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Re: Fuel Filter inside our gas tanks

Postby seef158 » Mon Jul 27, 2020 10:22 am

My 72 28 express had an issue with the pickup being corroded out..... I had to replace the stand pipe inside of the tank. The bottom 6" of the stand pipe looked like Swiss cheese and crumbled when I touched it. I reduced the problem to the tank by running the boat off of an outboard fuel tank for a few miles, leaving the rest of the lines in tact will tell you if the problem is in the tank or the lines/filter/pump.
1972 28' express single 318, working on getting the bugs worked out.
forest lake, mn
Duluth, mn
Washburn, wi