What Causes White Smoke from the Engine Exhaust Pipe?
1 Answers
White smoke from a car's exhaust pipe may be caused by a dirty air filter, temperature issues, or incorrect oil levels. Below is relevant information about car exhaust: 1. It could be due to a dirty air filter in the vehicle: leading to insufficient air intake, or possibly a problem with the carburetor, or contamination of the oxygen sensor in the exhaust pipe, causing the computer to provide incorrect air-fuel mixture information. 2. Temperature: Normal white smoke is due to the exhaust gases being expelled from the pipe; when these gases reach a certain temperature, they condense into water droplets. If the engine emits a large amount of water vapor or white smoke while running, check the fuel tank for water accumulation, inspect whether the cylinder head gasket is damaged, if the engine block has cracks, or if the cylinder sleeve seal is intact. 3. Oil level: High temperatures in the cylinder can cause gases to enter the oil pan, leading to oil degradation. This is a very common issue, so it's crucial not to overfill or underfill the oil. Normally, exhaust gases are just water vapor, but the high idle speed of a cold engine can also cause the water vapor to appear as white smoke. In fact, white smoke is relatively easy to address, as long as there is no black or blue smoke.
