If It's Not One Thing It's Another

[jhorton3]

Fuel pump stopped clicking today. Car was running for 5 minutes and then died. Made attempts to restart and realized the pump wasn't clicking. It's a low pressure square body Facet type. Here's what's strange. I left the car for an hour and tried to crank it again. The pump clicked for about 20 seconds and stopped. There's no fuel at the carbs and she's sitting with 3/4 tank of gas.

So the question is, mechanical failure in the pump or electrical? All wiring is in tact and the fuses are good. I've always been concerned about this pump as it is always pumping. It never slows when pressure builds up.

 

[texas_bugeye]

Not sure how yours is mounted but on mine its mounted at the rear bulk head at about the same height as the fuel oulet of the tank. i have it soft mounted using some 1/4 pices of fuel hose as the bushing. When the car has been sitting for a day or so, yes its a Weber not an SU, it will run loud for a few seconds until it fills the floatbowl then quite down to almost silent. I would check for flow out of the pump just prior to the fuel filter before you tear out the pump. This little fellas run forever. Also if there is any loose scale and such in the tank it could become trapped in the check valve of the fuelpump so as to not allow it to move the gas forward only back and forth in the pump.

 

[jhorton3]

Chris, you may be right. This is a relatively new tank so I wouldn't have thought I'd already have that much scale to cause this kind of problem. I put the rear of the car on jack stands and gave the pump a couple of good whacks with a rubber mallet. Turned the key and the pump ticked as it should. Fired the car up and it ran another 2-3 minutes before dying because the pump wasn't ticking. Gave the pump another couple of whacks, but it wouldn't come on again. Guess I'm looking at taking it off and seeing if I can clean it out.

 

[SilentUnicorn]

get a bigger hammer?

j/k

mark