Can I add an inline fuel pump instead of replacing the pump in the tank?
Honestly, the inline fuel pump may work and then again it might not. Your best bet is to do it right the first time, ie remove the intake pump and replace. Chances are you will give yourself more headaches in the future by cutting corners and leaving the old pump in the tank.
Is the fuel filter before or after pump?
You want the filter after the pump. A filter before the pump will reduce the pressure in the suction line and a dirty filter significantly more so. Lower pressure with high temperatures makes it easier to reach the vapor pressure of the fuel and create a vapor lock condition.
How much fuel pressure is needed for a carburetor?
Fuel pressure should be set between 6 and 8 psi for a gasoline carburetor. An alcohol carburetor is a different animal with very different requirements. The Alky carburetor will require 4 to 5 psi at idle and 9 to 12 psi at wide open throttle. Remember, fuel pressure is not a substitute for volume!
Do mechanical fuel pumps have filters?
Not all cars have a filter in the pump . Later models often have sealed, filterless pumps which do not need maintenance, and rely on filters elsewhere, mainly in fuel pipes or the petrol tank, or at the inlet to the carburettor float chamber. Many cars have a mechanical fuel pump driven off the camshaft .
When to replace a fuel pump and filter?
Nevertheless, here are some reasons why the pump and filter may need replacement. Replace the pump if: The pump motor is shorted or burned, which is characterized by a blown out fuse. The pump motor is open. The fuse is ok, but it just won’t run. The pump is weak and fails to provide the needed fuel pressure.
How do you remove a fuel pump from a tank?
Refer to your service manual for instructions on removing the fuel pump assembly from the tank. There’s typically a plate held in place with screws or bolts, which, once released, enables removal of the pump. Install the new pump in the opposite order you used to remove the old one.
How do you change the fuel pump on a Harley Davidson?
The filter on an early bike can simply be changed by removing the petcock from the tank. Before messing with the fuel tank and pump, the whole fuel injection system needs to be purged of fuel pressure to avoid any unwanted fuel spills, though the tank does not have to be emptied or removed.
How to check the fuel line on a vacuum pump?
To do this, disconnect the fuel line from the vacuum inlet fitting on the vacuum pump. Take the fuel line and lower it to a point that is below the fuel tank and see if gravity will cause fuel to flow from the tank through the line. If fuel flows, than the line is clear. If fuel will not flow, than check the fuel filter to see if it is restricted.