You can take the gas cap off and put your ear down to fill neck.
Then have someone to turn the key on and you listen, Pump should run for 3 seconds then stop. If it's working you will here it.
Are you can hook a fuel pressure gauge up to the fuel line and turn key on
you should have pressure if it's working.
could be either,check connections
Check the fuel pump relay.
first check to see if fuel filter is clogged.if you have an electric fuel pump, check the fuel pump fuse. next check the fuel lift pump. then check the injector pump
how dose a fuel pump pump on a 1973 how dose a fuel pump pump on a 1973
check for voltage back where the hot wire connects to the fuel pump. also check groundwire off fuel pump. check fuel pump fuse / check fuel pump relay.
The relays are located on the driver side inner fender... I heard that you can take the horn relay out and change it with the fuel pump relay and if the fuel pump works and horn doesnt then you know that it was the relay... Fuses are easy to check, just look at it, if it is broken then its the fuse.
You will need a fuel pressure guage to check the fuel pump. The pump operates at 13 psi.
You can check your 1984 928 Porsche fuel pump with a diagnostic tester. You can also check the fuel pump by connecting the wires to a power source and see if the fuel pump operates.
check fuel pump fuse..
no, it doesn't. If your fuel pump has failed, check the fuse box under the bonnet. You will find a fuse for the fuel pump in there. If the fuel pump still doesn't work then you are up for another pump. I do know that they are very expensive but i just used a second hand pump from a younger model & it works fine.
Fuel pressure pump, gets fuel to fuel injector pump, which pump do you want to check and symptoms?
Check to make sure that the pump is getting power to the Neon fuel pump. Check the pump relay, and the pump fuses.