What Causes High Carbon Monoxide in Exhaust?

[SanCatherine]

There are several main reasons for high carbon monoxide levels in vehicle exhaust: 1. Sensor malfunction: Faulty sensors that control and stabilize the air-fuel ratio can cause excessive gasoline injection, resulting in insufficient air for combustion. This leads to incomplete combustion of gasoline, increasing carbon monoxide levels in the exhaust. 2. Clogged or dirty catalytic converter: This can impair the converter's ability to transform carbon monoxide, requiring cleaning or replacement of the catalytic converter. 3. Excessive carbon buildup: Simply cleaning the carbon deposits to ensure complete fuel combustion and prevent carbon buildup in the engine can significantly reduce carbon monoxide levels in the exhaust.