What should I do if the annual inspection of automobile exhaust fails?

Replace the spark plug;

Clean distributor contact and distributor contact;

Adjust the ignition time. Delaying ignition time will obviously reduce the content of nitric oxide in tail gas. Due to the delay of ignition time, the combustion time in the combustion chamber will be shortened, the maximum combustion temperature will be reduced, and the emitted hydrocarbons and nitrogen oxides will also be reduced. But it will lead to the decrease of engine power;

Clean the air filter;

Clean the throttle with cleaning agent.

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Matters needing attention in detecting automobile exhaust:

1. Change some oil in advance

It is going to inspect the vehicle and measure the exhaust gas. Try to use clean oil in the fuel tank, then replace it with high-grade oil and fill it up at a gas station with good oil products, which is helpful for measuring tail gas.

2. Repair and replace the exhaust pipe

If the vehicle is used for a long time and the exhaust pipe shows signs of corrosion, Bian Xiao suggested that it should be overhauled in time. If it fails, it is necessary to change the exhaust pipe, so as to better pass the exhaust gas measurement. Generally, the exhaust pipe with severe corrosion is difficult to pass through.

3. Please ask the insurance company to follow up and detect the tail gas.

Now that the vehicle is insured, the insurance company will generally give you a vehicle inspection card to help you check the vehicle and measure the exhaust gas, which saves a lot of trouble, and the dedicated passage is helpful for the smooth detection of the exhaust gas. Ask whether the insurance company will assist in the detection of exhaust gas.

4. Carefully select "Tuo" to measure tail gas.

Many car owners have no confidence in the condition of their vehicles and want to spend money to find a "trust" to measure exhaust gas. However, according to the statistics of the vehicle management office, about 90% of vehicles can pass the exhaust gas detection normally, so unless the vehicles are very old, there is no need to spend money to find someone to detect the exhaust gas.