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Exhaust gas detection but the cause of elimination

source：/ | Release time：2023-10-09

Tail gas detection but the reason for the detection of 1.CO than low air fuel, check whether the failure of oxygen sensors, and then too much fuel supply, too little air supply. To check the fuel supply system and air supply system is normal. To replace the air filter, replace the oxygen sensor. 2. HC over-standard air-fuel ratio is too high, the same check whether oxygen sensor failure, to check whether the fuel supply system and air supply system is normal. To replace the air filter, replace the oxygen sensor, and then check the cylinder pressure. 3. Nox check whether the EGR failure, ignition time is correct, and then clean the throttle, clean the nozzle, clean the engine cylinder carbon emissions exceed a lot of reasons, and is simply the three-way catalyst reasons. Any part of the engine has a problem, will lead to abnormal exhaust emissions, three-way catalyst it is scientific emission reduction. Therefore, to have a basic understanding of their own car. If the engine has a fault, such as burning oil, abnormal ignition, oxygen sensors, air flow sensors, temperature sensors or even ECU misalignment of the car, or to fix the fault first.

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