So, I’ve remade these lines once recently and replaced the bulkhead fitting and washers in the fuel cell. I took my time making clean straight cuts on the new lines and getting them pretty tight when assembling them together. The line from the cell to the filter leaks on both ends but the 90 degree fitting is the one that leaks bad enough to where fuel drops to the ground. The line from the filter to the pump only leaks at the 90 but not as bad as the other 90.
The only theory I can come up with is that the shorter line I have has very little to possibly no slack in it and that causes the fittings to pull a part from each other internally (PTFE LINE AND 3 PIECE FITTING) and that causes the leak but if that was the case, the 90degree fitting coming out of the filter shouldn’t leak because that line I remade with some more slack in it. There’s the possibility of these 90 degree fittings are going to leak no matter what also...
only ideas I have are to try aluminum line or make more lines with different brand hose and fittings. Anyone have any other ideas or something I could be missing?