It could be a bad fuel pump, but first I would replace the relay and check the fuel filter first. That would rule those out and that leaves the fuel pump, usually. Hope this helps. Good luck.
The fuel pump switch is what tells the fuel pump what pressure to pump fuel into the fuel rail
No power to the fuel pump. Bad fuel pump. Fuel pump pickup screen extremely clogged. Fuel filter extremely clogged. pinched fuel line no fuel in tank
fuel pump isn't sending any gas to rail /check relay first then fuel pump at pump / that should let u no whats going on
You must drop the fuel tank. The fuel pump is inside along the sending unit rail. I would STRONGLY suggest getting a new sending unit to go with the new fuel pump.
It is attached to the fuel rail.
When the ignition is first turned on you should hear the pump start up. If you do then the pump is getting power. There is a port on the fuel rail where you can put a gauge to see if the pump is putting out pressure.
IS it the pump itself? Did you check for a blocked fuel filter? are you getting any fuel pressure to the fuel rail?
the fuel line pump is what sends the fuel up to the fuel rail. the fuel system is a push pull system there is a pump inside the tank that pulls the fuel out the tank and another "fuel line pump" that pushes the fuel to the fuel rail. it is usually located inside the frame under the drivers side of the vehicle.
it could be your fuel filter or fuel pump, on most f150's there are 2 fuel pumps...1 in the tank, 1 on the fuel rail.
It carries the fuel from the fuel pump to the fuel rail and back.
Out of fuel? Pump not running?
Fuel pressure test at the fuel rail.
On the side rail/chassi on the drivers side. The fuel filter is on the driver side rail just beind the cab. The fuel pump is located on top of the fuel tank.
check the the pump pressure at the rail
on the frame rail behind the fuel tank
With a fuel pressure test at the fuel rail.
With a fuel pressure gauge connected to the fuel rail.
Could be a fuel filter or fuel pump is weak. Change fuel filter and check output pressure of the fuel pump at the Schrader valve on the fuel rail. You will need a fuel pressure gauge. At idle you should be getting at LEAST 30 to 50 psi.
could be out of gas, maybe a blockage in the fuel line, are the injector getting power??? is there enough presure from the fuel pump it needs to be a minimum of 25 psi just to open the injectors , and the fuel rail could havea blockage as well
On the fuel rail
A fuel pressure test done at the fuel rail will verify the condition of the fuel pump. Before going to that much trouble check the fuse, and fuel pump relay. If either one is defective the fuel pump will not function.
there is a fuel pump on the chassis rail,near rear end also a big fuel pump on top of engine between fuel filter and turbo
With a fuel pressure gauge connected to the Schrader valve on the fuel rail.
it controls fuel delivery to high pressure part of pump in common rail engines
fuel pressure regulator on the fuel rail it will have a vacuum line on it