I had a sump installed on my fuel tank. The old fuel line with the blue plastic tab on it was capped since the tank was not removed for the sump installation. I ran 2 tanks of fuel through it and just topped it off for the third time. I drove about 10 highway miles, stopped for 20 min and found a big puddle of fuel when I returned to the truck. Drove it home while it was leaking, put a clamp on the line to stop the flow of fuel. The guy who installed the sump came over and put a different cap on the line and it stopped leaking. Went to drive it to work next morning, got about a mile from the house and truck sputtered and quit while driving. Got it home and pulled the fuel filter cap off and found no fuel in the filter housing. Turned the key and fuel pump pumped the bowl full, as soon as the key was turned off, the fuel started draining down to empty the bowl. But it didn’t go on the ground. Not sure where it’s going but it won’t keep the fuel in the filter housing.