What is the phenomenon that the check valve is broken?

One-way valve has a certain relationship with fuel saving. If the engine oil in the crankcase deteriorates, becomes dirty and blocks the check valve, the vacuum degree of the intake manifold will increase with the increase of the throttle opening, so the air velocity at the throat of the carburetor will increase, the oil output of the fuel injector will also increase, and the fuel consumption will also increase. The following is the related content of one-way valve: 1. Introduction: One-way valve is also called check valve or check valve. Used in hydraulic system to prevent oil flow from flowing backwards, or used in pneumatic system to prevent compressed air from flowing backwards. 2. Type: There are two kinds of one-way valves: straight-through type and right-angle type. Straight-through check valves are installed on threaded pipes. Right-angle check valves have three forms: threaded connection, plate connection and flange connection.