Why does idling not produce blue smoke while heavy throttle does?
1 Answers
Below is an explanation of why idling does not produce blue smoke while heavy throttle does: 1. Blue smoke from the exhaust pipe indicates oil burning. 'Oil burning' refers to engine oil entering the combustion chamber and mixing with the air-fuel mixture for combustion. When a vehicle exhibits 'oil burning,' it can lead to rapid damage of the oxygen sensor, increased carbon deposits in the combustion chamber, unstable idling, reduced acceleration power, increased fuel consumption, and excessive exhaust emissions. 'Cold engine oil burning' refers to the emission of thick blue smoke from the exhaust pipe upon the first ignition, which disappears after a while. 'Acceleration oil burning' occurs when the driver presses the accelerator hard while driving or revs the engine hard while stationary, resulting in a large amount of blue smoke from the exhaust pipe. 2. Causes of the issue: Normal wear and tear, which is a common phenomenon after a certain mileage. Different vehicles, usage patterns, and regions (dust content in the air) can all affect engine lifespan. Abnormal wear can be caused by product quality issues or improper use leading to premature wear, such as using substandard oil, failing to change oil and oil filters on time, cold starts with heavy throttle, prolonged operation with insufficient oil, prolonged operation under high temperatures, prolonged operation under high load and high RPM, insufficient oil pump pressure, low oil pressure, or clogged oil passages. All these can cause the engine to burn oil, thereby reducing its lifespan. 3. Solutions: Choose high-quality oil. Older vehicles may benefit from slightly thicker oil to improve sealing between pistons and cylinder walls. Regularly check the oil dipstick and change the oil and oil filter as recommended in the product manual. Use genuine oil filter components.
