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A Dongfeng Citroen C2 car with a mileage of about 130 thousand km and a 1. 6L engine and a manual transmission. User response: when the vehicle is started, the engine will not work. After receiving the car: check the battery and power supply system, normal. The diagnostic system is used to diagnose the engine system without fault code. Check, measure its resistance, normal. For insurance purposes, replacement and trial run, the trouble remains. Check fuel pressure, about 300kPa, within the standard value range. Check the injector and its fuel injection state, normal. Check ignition system, spark plug and ignition coil are all normal.