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What is the engine fuel supply system composed of?

1 Answers

VanJameson

07/30/25 12:00am

The engine fuel supply system is composed of auxiliary devices such as the fuel tank, fuel filter, fuel pump, oil-gas separator, fuel pipes, and fuel gauge. The normal fuel pressure of an engine is between 300 to 350 kilopascals. A fuel pressure gauge is used to measure the pressure of the fuel supply system, assess the working condition of fuel system components like the electric fuel pump and fuel pressure regulator, and serves as a specialized tool for inspecting and diagnosing faults in the fuel system. The method for using the engine fuel pressure gauge is as follows: 1. Start the engine and run it until it reaches normal operating temperature; 2. Turn off the car and wait for the engine to stop running, then remove all spark plugs; 3. Fully open the throttle and press the gauge's connector tightly onto the spark plug hole; 4. Use the starter to rotate the engine at 100 to 150 revolutions for 3 to 5 seconds; 5. The pointer on the gauge will gradually rise and stop at a certain value, which indicates the engine's fuel pressure.

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