fuel tank /feed disorder Still !!!!!!

jimbo36 · Post by **jimbo36** » Fri Jul 10, 2009 7:26 am

Very interesting, anti siphon valve you say. I will have to add these for sure. My problem is, the port tank on my F36 tricabin has a hole in the supply tube in the tank and I cannot get it out of the tank collar. The valve broke off in my hand and the threaded piece is still in there. Any suggestions? Also, should the threads be dressed with a sealer. If so, what do I use? Thanks, Jimbo36

guglielmo6160 · Post by **guglielmo6160** » Fri Jul 10, 2009 8:35 am

prowler, no my back deck is solid fiberglass, (F31) and it has three access panels, one over the rear rudder area and two over each of the engines, port and starboard, and of course,,,,,,,,,,,, the foward tank is directly below the area inbetween them all. so I have to work inbetween the three open areas, and there is only about a 1 ft or less space between the top of the tank and the flooring, and I have to stretch my arm way under from the back(stern) access panel, so its not that easy

mtwolf · Post by **mtwolf** » Fri Jul 10, 2009 9:39 am

Bill,

Tubes are not flexible as they are a soild copper tube. The only way would be to cut an access hole, with a hole saw over the top of the tank at the fitting, and then install a deck plate. You would never be able to straighten the tube correctly to get it back in. Just my humble opinion. My deck has a plate over top the front tank fitting, although it is to far forward to pull the front one. I managed to contend with all this mess when I replaced my tanks.

John
F-31
MD

guglielmo6160 · Post by **guglielmo6160** » Fri Jul 10, 2009 10:35 am

now why would they not put an acess panel in there,,,? go figure

Agitator · Post by **Agitator** » Sun Jul 12, 2009 9:25 am

Bill, The pick up tube on the starboard tank of my F26 stopped up. Like you, I have no anti-siphon valve and worse, no access to any of the tubing, vents or sending units on either tank. With nothing to loose, I took a portable air tank and blew through the fuel line back into the tank. I could tell quickly the line was stopped up. A second burst of air unstopped the line and now it works great.... CAUTION...CAUTION... Here is something I learned the hard way. My tank was full, I had removed the gas filler cap completely to keep from building up any internal pressure. When the restriction blew away, air entered the tank and blew a lot of gas out of the filler neck before I could stop it. There's nothing worse than having a half gallon of raw gas poured out on the deck, in the bilge and in the water....

guglielmo6160 · Post by **guglielmo6160** » Mon Jul 13, 2009 4:18 am

Agi

as you said, nothing to loose, Im gonna try that if I cant get the pickup out, its pretty clear that its plugged up, thanks

JuiceClark · Post by **JuiceClark** » Tue Jul 14, 2009 10:20 pm

This is potentially a dumb comment...but on a previous boat the engines were starving for fuel and wouldn't go to a high RPM. I spent hours trying to figure it out from the fuel filters forward. I finally called my mechanic who found the vent, which was twisted into a loop, had water in the loop so air couldn't easily pass. So, it was creating a slight vacuum when the fuel pump tried to suck gas. Apparently, instead of just sucking the 1/2 cup of water into the fuel, it was sucking air bubbles through the water like blowing bubbles through a straw.
Weird I know, but that was the problem. A $4 clam shell over the vent solved the problem from then on.

1967 seavoyager · Post by **1967 seavoyager** » Thu Jul 16, 2009 10:56 pm

Tanks in the woodies were made by Evcor Metal Fabricators Lancaster, Pa. Can't find them on the web but, they may still be around.

Dan Faith · Post by **Dan Faith** » Mon Jul 20, 2009 9:04 am

I found the antisyphon valve and took one apart to see if it was stuck. It was, (in the open position). cleaned it and now it works great I have to check the rest of them.