What Does Fuel Metering Unit Flow Indicate?

[Rachel]

Fuel metering unit flow being too large indicates a malfunction in the fuel metering unit, leading to increased fuel consumption or reduced power. If the fuel injection volume of the metering unit is higher than the calibrated value, the amount of fuel entering the cylinder each time will increase, resulting in higher fuel consumption and a significant drop in vehicle power. In severe cases, it may even prevent ignition. Below is additional information: 1. Symptoms of metering unit failure: The engine warning light on the vehicle dashboard illuminates, and the vehicle fails to ignite. When the fuel metering unit is damaged, the vehicle will automatically stop the injector's operation to avoid damage caused by excessive internal pressure. The fuel metering unit is usually installed at the high-pressure fuel pump and primarily controls fuel injection volume and fuel pressure values. 2. Concept of fuel: Fuel is used for fuel engines and is mainly divided into two types: gasoline and diesel.