A small piston fuel pump injects liquid during compression. Soon constant pumping with a pump was insufficient. Fuel is typically supplied via a fuel pump. This increases the energy needed to pump fluid through a pipe. This reservoir is constantly replenished with fuel supplied by a fuel pump. These systems are based on the pump and valve approach. No change to the oil pump nor coolant pump circuits was needed. The water pump and thermostat are behind this belt. There is debate about which variety of sump pump is better. Superatmospheric cycles&colon; achieved with a vacuum pump. There is a manual bilge pump for emergency use. Motorists occasionally pump gasoline into a diesel car by accident. The plane's primary fuel pump malfunctioned during takeoff. The substance was pressurized by the heat and the usage of a force pump. This is in contrast to the passive feeding basking shark, which does not pump water.