Best Fuel Pump Advice for Newb...
Checked and replaced that jumper hose when I replaced the tank. Got the hose clamps on good too. I think I'm OK there.
No problem AJ, I don't mind if something is repeated a hundred times, but that wasn't mentioned before.
Oh Ok thanks.
You know about gear clamps then,right? If you use those back there, you have to double them up and offset them 180*, else as the hose ages it loses it's grip and the pump sucks air right at the screw anchor. It doesn't usually leak fuel cuz it's higher than the tank. When you stop the car the fuel puddles in the lowest part of the supply line. If there is enough in there, the pump picks it up and pushes it up into the carb. If there is only a small air leak at the jumper, maybe the pump will continue to pull the fuel up and the car continues to run. But when you stand on it, the pump draws more air, and eventually the bowl dries up. It usually takes a lotta lotta cranking to get it running again. Very frustrating.
Mechanical fuel pumps have two chambers a pusher side and a puller side. The pusher side makes the pressure........................... and the puller side makes vacuum, and you can measure both.I just thought I'd throw that in there in case nobody had mentioned that either. You can put the vacuum gauge on the jumper and quickly see what is what.
The reason I mention that is because, my fuel system lives beside a 400hp aluminum headed giant killer that hits 93 in the 1/8 yet will slog along in traffic for long periods of time on the hottest days, and never a hint of trouble. It gets hot as Hades under that hood, but the fuel keeps moving along without any help from an auxiliary pump.
Nevertheless,Happy HotRodding.
