If you don't have a cap, get about 10 cm of fuel piping/rubber hose that fits over the port, fold it in half and zip tie together. Cut excess length and cap that pipe.
Works for brake pipes as well, as a temporary means to prevent excess fluid loss when working on them.
Something like this:
![Leg Automotive tire Glove Sleeve Gesture]()
Works for brake pipes as well, as a temporary means to prevent excess fluid loss when working on them.
Something like this:
