The citizen lighter system reported an error, but it failed to start.

It may be due to the poor proportion of combustible mixture or the insufficient combustion in the combustion chamber of the engine cylinder, resulting in the fuel system being too rich and the car unable to start.

According to the reply of relevant professionals, the reason for this situation is that the fuel system is too rich, which may be due to insufficient air and intake pressure in the cylinder, resulting in insufficient fuel combustion in the cylinder. Common problems include dirty throttle and intake air, carbon deposit, three-way catalyst blockage, carbon deposit in spark plug, oxygen sensor and other component problems.

Solution: 1 Check the cleanliness of the throttle. If the throttle is too dirty and there is carbon deposit, it is necessary to carefully clean the carbon deposit in the throttle and air intake;

2. Check whether the three-way catalytic converter is blocked. If it is blocked, clean it with special cleaning agent first. If the effect is not good, a new three-way catalytic converter needs to be replaced.

3. Remove the spark plug and check whether there is too much carbon deposit. If there is too much carbon deposit, clean the spark plug. After cleaning, check whether the spark plug works normally. If the spark plug is abnormal, replace it.

4. Use a multimeter to detect the voltage and resistance of the oxygen sensor in working condition, and then detect the waveform. If the oxygen sensor is damaged, it needs to be replaced.