A diaphragm inside that is moved back and forth normally by the crankshaft or cam.
If you mean replacing the electric pump with a mechanical one, that is not possible.
how dose a fuel pump pump on a 1973 how dose a fuel pump pump on a 1973
NO, it has only one fuel pump, and it is mechanical.
If you are running the fuel injection....absolutely not. No mechanical pump will provide the fuel pressure needed to run it. I don't even know if the 93 still has the mechanical fuel pump mount. Even if it did, the camshaft wouldn't have the fuel pump eccentric to run the pump.
Yes it does. But you can not run a mechanical pump on a fuel injected engine. It will not pump enough fuel to run the engine.
No, there is no way to operate a mechanical pump on your engine.
Mechanical
It doesn't have an electric fuel pump. It has a carburetor and a mechanical fuel pump. So there isn't a fuel pump fuse.
You fail to list the year, so it is impossible for me to answer. If your car is Fuel Injected, it has an electric fuel pump. If it has a carburetor it has a mechanical pump.
Electric fuel pump--Usually always when the ignition is on. Mechanical fuel pump--When the engine is turning.
Is it an electronic or mechanical
Yes a mechanical cam type fuel pump can leak out the breather hole on the bottom of casting of fuel pump