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View Full Version : 5/16" plastic fuel line - Question



MakoGT350
08-23-2025, 12:53 PM
doing EFI with the parts all from FFR. I am making a new line to go from the pump pick up assembly to the filter because I kinked the one that came from FFR. I am working with new pieces, and I have watched a few videos, but it is kicking my butt to press in the barbed fitting into the line.
Hoping someone has a proven method...

Oshkosh Rob
08-23-2025, 03:50 PM
I too had to redo my fuel line from the tank to the filter. Googling how to press barbed fitting into nylon fuel line, I found the caulk gun and flairing tool trick to work very well. Clamp the fuel line in the flairing clamp, put into a caulk gun and slowly squeeze and watch the fitting go into the line.

MakoGT350
08-23-2025, 06:22 PM
I too had to redo my fuel line from the tank to the filter. Googling how to press barbed fitting into nylon fuel line, I found the caulk gun and flairing tool trick to work very well. Clamp the fuel line in the flairing clamp, put into a caulk gun and slowly squeeze and watch the fitting go into the line.

Thanks Rob - I saw something similar, but didn't have the same style caulk gun. I have it now, will try again.