What to Do When Exhaust Carbon Monoxide Levels Exceed Standards?

[StHazel]

Solutions for excessive carbon monoxide in exhaust include: inspecting the air filter, spark plugs, intake air temperature sensor, and intake manifold pressure sensor; adding dual-core friction-reducing repair agents and high-efficiency cleaners; if ineffective, cleaning the three-way catalytic converter. Excessive exhaust emissions mainly refer to carbon monoxide, nitrogen oxides, nitrogen-hydrogen compounds, etc., exceeding national exhaust emission standards. These excessive emissions are directly related to carbon deposits in the fuel supply system. More carbon deposits lead to severe exhaust emissions, while fewer result in minor issues. Excessive carbon monoxide in car exhaust is primarily due to poor combustion. Causes of this phenomenon include: failed spark plugs, poor ignition, excessive cylinder wall clearance, uncalibrated valve timing, failed three-way catalytic converter, poor fuel injector atomization, etc.

[IslaDella]

As an experienced driver, I've encountered exhaust CO exceeding standards several times. The key is not to panic. Usually, incomplete engine combustion is the main cause. I always check if the air filter is clogged first, as it affects air intake and causes the fuel mixture to become too rich, producing CO. If the filter is fine, I'll inspect the spark plugs and fuel injectors for carbon buildup. Once my catalytic converter failed, but after replacing it, the emissions met standards. A reminder: inhaling excessive exhaust can cause poisoning—if you detect a problem, open windows for ventilation before heading to a repair shop for testing. Regular maintenance, including cleaning the fuel system, can save on major repair costs and prevent health risks. Driving safety is paramount.

[SanEloise]

I enjoy DIY car repairs to troubleshoot issues. When CO emissions exceed standards, I usually start by checking the oxygen sensor. Using a diagnostic tool to measure the air-fuel ratio, if the value is too high, it indicates a combustion issue. I then clean the throttle body and fuel injectors to ensure even fuel atomization. If the sensor is faulty, I purchase a new one online and replace it myself to save money. However, the catalytic converter is complex, so I leave it to professional shops to avoid damage. The whole process hones my DIY skills and saves money. Successfully fixing it and passing emissions tests gives a great sense of achievement. Remember to wear gloves and prioritize safety during operations.

[VonLiam]

As a family car owner with children, I get extremely nervous about excessive CO emissions in the exhaust. Carbon monoxide can silently cause poisoning and harm health. If I detect excessive emissions, I immediately stop the car, open windows for ventilation, and carefully drive to the repair shop. During regular maintenance, I emphasize checking the exhaust system, especially the oxygen sensor and catalytic converter, as older cars are prone to failures. The mechanic advised that regular fuel system cleaning can prevent most issues—don't delay repairs to save money. Health is priceless, safety comes first, and only then can the whole family travel with peace of mind.