Excessive engine fuel consumption means that its fuel consumption per 100 kilometers exceeds the prescribed standard value. If the fuel consumption is too large, the economy of the engine will be poor. There are many factors that affect the fuel consumption of the engine, including the technical condition of the engine and the technical condition of the chassis.
1. Trouble phenomenon: the engine consumes too much fuel.
2. Common causes of failure
1) The coolant temperature sensor is abnormal.
2) The air flow meter or intake pressure sensor is malfunctioning.
3) The throttle position sensor is malfunctioning.
4) The fuel pressure is too high.
5) The cold start fuel injector is leaking or the cold start control is abnormal.
6) The fuel injector is leaking.
7) The oxygen sensor fails.
8) The ignition system is malfunctioning.
9) Engine mechanical parts malfunction (cylinder pressure is too low, etc.).
10) The gas distribution phase is incorrect.
11) ECU and connector failure.
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