How priming of hydrocarbon content pumps?

Simply put - a pump is a device that moves fluid - generally from a lower level to a higher level against gravity. To do this - the device must already be submerged in the fluid, since it cannot...

Using government spending to increase purchasing power and stimulate the economy during the Great Depression.

Priming of any pump is the same - it means filling the pump with liquid to get it to pump because the pump will not fill itself with liquid from being dry (it won't self-prime).

In self primming pump, there in no need for removing the air from in the casing. Eg piston pump

Spray a starter fluid into the intake to get the engine running. If the fuel pump does not start pumping, it is defective, or the fuel filter is clogged. These pumps are self priming.