Quote:
Originally Posted by SeaChord
Add H)
refueling issue. I've refueled 3 times so far...1st time, nozzle kept popping off, back splashing fuel and with the fuel gauge at less then 1/2 it took 8gallons and fuel was up to the neck.
2nd time, nozzle kept shutting off, back splash was less but still did it and it took 6 gals with the gauge at 1/2 to start.
WAIT>>>FIX THE ISSUE:
Problem 1) Fuel vent hose was 3ft longer then need be and looped high before connected to the vent on the starboard side. I cut that to lenght for a straighter run with a slight high lift a few inches before the vent outlet.
Problem 2) The screen in the vent itself added restrictions. It wasnt caked with deposits but there was some restriction...about 30% Id say.
I REMOVED the screen. Couldnt think of a reason for it to have one.
For GP, I removed the fuel inlet tube at the tank end to inpect it. To be sure it was clear I used the excess vent hose (5/8 ID) to snake out the fill hose....it was clear and I reinstalled that. I also blew compressed air thru the vent hose from the tank side out. I blew low PSI air into the vent fitting on the tank as well. Reassembled everythin correctly.
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Both the large loop and the vent screen are there for a reason.
The length of the vent line was to create the loop. The loop is run with the loop ABOVE the vent through hull so that water doesn't splash up the side of the hull, enter the vent line and run down into the tank. If it were looped BELOW the vent through-hull then it would create a trap. Either overflowing fuel or incoming water would gete caught in the trap and the vent would essentially be blocked. By looping above the vent, overflowing fuel will backflow back into the tank and any incoming water will backflow back out the vent overboard again.
The screen is there to prevent insects from crawling in and making a next blocking the vent. Believe it or not, this is very common. Mud daubers and wasps do it all the time.
The fuel backflow was from the vent not being able to vent air as fast as it was being displaced by the fuel being filled. The vent screen and/or corrosion inside of the vent is typically the cause.
Your solution should have been to replace the entire vent through hull and leave the vent line alone. I strongly suggest doing the following:
1) Re-install the vent line with the longer line and replace the loop ABOVE the through hull. Make sure it is properly secured.
2) Replace the entire vent with a new one. It will have a properly sized (uncorroded) aperture and a clear screen.
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