Before testing, perform the 'on/off' operation, which is effective for personal testing!

1. Take a shower with the three-way catalyst, and its activity will immediately return!

This thing is like a "mask" for a car, blocking the exhaust gas and preventing it from being discharged.

Operation guide: Remove and use oxalic acid foam (dangerous! It is recommended to find a professional store).

The non dismantling cleaning agent is filled into the fuel tank and automatically cleaned when driving on the highway.

Effect: After cleaning, a certain car owner reduced NOx from 1200 to 800 (the national standard limit of 900)!

2. Pull it at high speed, and all the carbon deposits will be washed away!

If you want the car to be in good condition, you can't do less on the highway. Running at a speed of over 100km/h for 20 minutes, the airflow can blow off half of the valve carbon deposits!

Data support: T Ü V testing in Germany shows that continuous high-speed driving can reduce HC emissions by 18%.

3. Adjust the idle speed to reduce both fuel consumption and exhaust emissions!

An experienced driver looks at the RPM, a novice looks at the speed ", and a cold car idles at 1200 RPM? Is the car still above 800 RPM after being heated up? Hurry up and adjust!

Method: Use a diagnostic tool to adjust ECU parameters, or ask a technician to tighten the throttle valve screw (don't do it yourself, it's more troublesome to damage it).

Ultimate move: Change it if you need to, don't worry about money!

Is the three-way catalyst broken? Replace directly!

The old won't go and the new won't come. "This thing can become toxic (lead and sulfur poisoning) over time, so it's better to replace it with a new one than to clean it.

Avoiding pitfalls guide: Do not buy "dismantled parts", as their lifespan may only be 1/3 left!

Is the oxygen sensor malfunctioning? Hurry up and change!

This thing is the "nose" of the engine. If you can't smell the oxygen concentration, the fuel injection amount will be chaotic.

Fault manifestations: soaring fuel consumption, pungent exhaust, and constant engine malfunction light.

Maintain regularly and don't panic during annual inspections!

Rome was not built in a day, and the exhaust emissions did not exceed the standard in a day. To achieve these points in daily life, annual inspection is just a formality:

Oil change after 5000 kilometers: Don't regret it when the oil sludge clogs the oil passage.

Regular refueling treasure: PEA ingredients can remove carbon deposits.

Avoid short distance driving: driving less than 5 kilometers each time? Double the carbon deposition rate!

Pay attention to the malfunction light: continue to turn it on after it lights up, it may cause the three-way catalyst to be scrapped!

Finally, to be honest, annual inspections are not about making things difficult, but about helping you discover hidden dangers. The car is in good condition and the exhaust naturally meets the standard; Make do with it recklessly in daily life, but it will definitely overturn during annual inspections!

A car is like a wife, you have to coax it to come. If you treat it well, it can accompany you to travel to the ends of the earth!