1、What components are included in the self-priming fuel pump system for three-wheeled motorcycles? There are several kinds of pumping form or way?

1. Like the picture of this three-wheeled motorcycle self-priming fuel pump, it is mainly composed of the pump body (also known as negative pressure tank switch) and the external connection of the hose, that is, the inlet and outlet pipes and suction pipes. Their pumping method is also the same.2. The working principle of the fuel pump is to rely on the negative pressure (suction) generated when the engine is rotating to drive the membrane inside the fuel pump through the suction hose to open the inlet and outlet ports of the pump, so that the gasoline in the tank will flow into the carburetor through the fuel pump. The main peripherals of the fuel pump are the three hoses, of which the suction hose should be the one not sealed with a vinyl sleeve in the picture, and the other two, one being the inlet hose and the other the outlet hose. On the other side of the pump there should be markings, an inward arrow or IN for inlet and an outward arrow or OUT for outlet. The inlet line goes to the fuel tank, the outlet line goes to the carburetor, and the suction line usually goes to a connection on the intake pipe between the carburetor and the engine.

3. When there is a problem with the fuel pump, generally the membrane or sleeve spring inside the pump is damaged, it has no reason, bad is bad, not with bad, can only be said to be the quality of the reason or accidental it. Another damage is the suction pipe leakage, can not open the oil pump.

4. Most fuel pumps like this can be used universally, with the hoses installed and plugged in correctly. If the fuel tank switch flow more than oil, that is, the engine does not rotate, or unplug the suction pipe does not suck when the fuel pump is also out of fuel, as well as sucking the suction pipe does not come out of fuel, as well as from the suction pipe flow of oil, are indicative of it is bad. Also make sure that the suction pipe is not leaking, otherwise it will also cause the oil pump to not produce oil.