It’s a great tool for cleanly pushing fittings into nylon fuel line. This build consists of a series of 3D-printed parts that can readily be adapted to a garden-variety caulking gun.

For our fuel system plumbing, we had a carburetor to plumb, so we opted to try Pro-Lite 350 along with Earl's fittings to tie our Holley fuel pump to the carb. We've utilized some traditional red ...