Re: Fuel pump by pass

Posted by Fish'n Jim On 2023/8/31 12:57:16

There's two problems pressure and delivery/flowrate when you install an electric pump on a formerly mechanical. Most of what's out there is made for FI and is too high pressure and recycles the excess flow to the gas tank w/ or w/o a regulator. Some are internally/self regulated.
It's probably obvious that yours has too much pressure, if it ruptured the mechanical's diaphragm or leaks out the housing. There is one I used(12VDC) that's made for carb cars that has the right pressure and flow. I'm not aware of 6Vs. It's a bit noisy but works in a full replacement where mechanical is bypassed. It's also wise to go the extra mile and do the electrical upgrade(relays,breaker, and multi-pole pressure switch) to avoid the pump running when it shouldn't. Not enough amperage to run off the ignition.
That info will come with the pump usually and there's a few good online help. Just putting on a manual switch is dangerous.