aussiesmg

iTrader: (1)

Ok, I had the Carter fuel pump running great, a few weeks later car stuttered in driveway so i turned it off, fuel filter was really dirty so installed a new one, car wouldn't start. Car has a Holley FPR installed although not dialled in yet.

Now I disconnected the front fuel line and turned it over, no fuel, went back to rear and removed storage bin to ensure power, this is confirmed.

Removed fuel pump connected it to another power source and it ran, evacuating the remaining fuel inside the pump. Reinstalled pump, decided to check lines for blockages, all lines were able to be blown through.

Removed roll over valve in case it was the culprit, still no fuel to front.

Is the pump bad? How do I test it?

I'm out of ideas, anybody?

Rogue_Wulff

Blockage between the tank (or in the tank) and pump? It cannot pump, what it cannot draw.

aussiesmg

iTrader: (1)

Nope blew air through and heard fuel in tank bubbling.

trochoid

iTrader: (6)

Did you test power at the pump itself? How many volts? The valve is a oneway valve, make certain it is hooked back up correctly. Check for leaks in the lines prior to the pump. I had a similiar problem and thought it was the pump. Had a sub-pinhole leak in the steel line.

Rogue_Wulff

Good call. Could have a leaky line between the tank and pump. Air is much easier to suck, than liquid.

peejay

It's possible that the pickup in the tank is clogging. Sure you can blow through it, you'd be blowing crud away from the inlet.

Run a hose from the pump's inlet to a can or something with gasoline in it, see if it will draw from that. First things first.

Really weird...

KeloidJonesJr.

iTrader: (8)

Problem is that these cars are old and have limited aftermarket support.

trochoid

iTrader: (6)

After running all new 3/8" fuel line, supply and return, cleaning out the tank, sandblasting, painting and undercoating it, this problem plagued me. I had an aftermarket glass barrel filter between the tank and the first hardline before the pump. Half the time I couldn't go more than 6 blocks and the damn thing died from lack of fuel. Wait a 1/2 hour and it would start back up. I had the filter sitting a horizontal position, after it plugged, the fuel would siphon back to the tank, partially cleaning the fiter, only to plug again.

I finally removed it, put an oem filter just before the pump. 3 filters and one more time of dropping the tank and cleaning it for the 3rd time, I'm good.

aussiesmg

iTrader: (1)

Great idea PeeJay, that'll ensure the pump works, which would leave the fuel tank as the problem.

Thanks mate.

trochoid

iTrader: (6)

If you have an S3 tank and you're sucking up crap, the pickup screen on the bottom of the pick tube in the tank is split. Mine was and I tossed it, I check the filter more often. It is possible for the pickup tube itself to plug up, had that problem too.

aussiesmg

iTrader: (1)

OK took PeeJay's suggestion, fuel pump did not draw from container of gas, removed pump again and ran it outside of the car through filter, no gas drawn, removed filter and tried again, no gas drawn, conclusion: pump is junk.

Can hear pump running and sounds fine but somehow nothing is going through.

While I had it out used compressed air back into tank and drained tank, fuel came out very clean despite being disturbed by air no visible sign of rust or other crud.