pressure test line comming from fuel tank,one of two ways,1.disconect line from fuel filter on side where fuel line connects from fuel tank,if pressure 26psi to 35psi reconnect line to filter and check your line on other side of filter if pressure holds your fuel pump and fuel filter are ok,the other way is to disconnect inlet line from tank to fuel regulator and check your fuel pressure,the only thing with this method is if your fuel filter is clogging or clogged you will not get an accurate fuel psi.you can also check your fuel regulator,you fuses,or your relays to anything that has to do with your,depending on what type of car you have
First is the pump good? Next is there power to the pump?
try bypassing the fuel pump, and directly injecting fuel, this will tell you if the problem is the pump, the lines, or further ahead
No. Tell us what the problem is you are having.
how do you tell if your fuel pump is working
The fuel pump will not come on. Of course this could be a blown fuse or the pump itself has failed. Check the fuse and if it is good then install a new relay to see if that solves the problem. If not the pump is bad.
Problem could be one of many things. First and foremost is the intertia switch. Check the fuel pump inertia switch (in trunk mounted to driver side trunk arm) to make sure its not kicked. If the problem is not there, than either the fuel pump relay is bad or there is a bad wiring connection in the circuit.
YOU MIGHT WANT TO START LOOKING FOR AN INTAKE GASKET LEAK, NOT A FUEL DELIVERY PROBLEM Remove Your Air Filter, If You See A Liquid Squirt or bubble up, Or smell gas, then its the plugs What is the problem? Why are you limiting the problem to those 2 areas of concern? If it is the electronic fuel pump that is the problem you will not hear the fuel pump humm as you turn the key in the ignition. Replace the fuel pump which is located inside the gas tank. after you have replace the pump and it doesn't humm what else could be the problem the fuel pump could still humm but it could be weak. there is a pressure valve on the fuel line behind the intake. put a pressure tester on it. if it is over 45 lbs. then your fuel pump is ok.
if its bad fuel pump will not work,exchange it with another relay of exact same size to check if that's the problem..
turn over engine with gas line to carbs disconnected fuel should flow from line.if not either no gas or pump not working
problem is most likely the fuse or open in fuel relay.
You can see by syphoning some out or taking the fuel pump out and getting the fuel gauge working.
You can tell if your fuel pump shutoff switch is bad, if the fuel pump does not shut off when you flip the switch. You can also tell if the switch is bad by looking at the wire connections.