Traditional Culture Encyclopedia - The 24 Solar Terms - What should I do if the tail gas of Audi a6 is foggy?
What should I do if the tail gas of Audi a6 is foggy?
2. Audi a6: 1 Treatment measures for black smoke from exhaust pipe. At different engine coolant temperatures, the resistance value of the coolant temperature sensor was measured and compared with the standard value. Or use the decoding of the electronic control unit to detect and replace the faulty coolant temperature sensor.
3. The air flowmeter or intake pressure sensor should be tested, and its parameters should meet the standards.
4. Measure the idle fuel pressure of the engine. The value should be 250 kPa, and the fuel pressure is about 300 kPa when the throttle valve is fully open.
5. Connect a voltmeter or test lamp to the wire harness plug of the cold start injector, and check whether the working duration of the cold start injector meets the standard value when the engine is started.
6. If the engine fault sensor emits black smoke after unplugging the wiring harness plug of the oxygen sensor, it should be replaced.
7. Remove the fuel injectors and check whether each fuel injector leaks oil or is stuck. If there is any abnormality, clean or replace the fuel injector.
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