Car mood, “false fault” (3)

Exhaust pipe abnormal sound after driving flameout

Some friends will vaguely hear the regular “click” sound from the tailpipe after the vehicle is turned off, which really scared a group of people, in fact, this is because the engine is working, the exhaust emissions will conduct heat to the exhaust pipe, the exhaust pipe is heated and expanded, and when the flame is turned off, the temperature is reduced, the exhaust pipe metal will contract, thus making a sound. It’s purely physical. It’s not a problem.

Water under the car after a long parking time

Another person asked, sometimes I do not drive, is just parked somewhere for a long time, why the ground position where it stays will also have a pile of water, this is not the exhaust pipe water, this is a problem? Worried about this problem car friends also put the heart in the stomach, this situation generally occurs in the summer, we carefully observe the water under the car will find that the water is clean and transparent, and the daily home air conditioning drip is not very similar? Yes, this is when the vehicle opens the air conditioning, because the surface temperature of the air conditioning evaporator is very low, the hot air in the car will condense on the surface of the evaporator and form water droplets, which are discharged to the bottom of the car through the pipeline, it is so simple.

The exhaust pipe of the vehicle emits white smoke, which is serious when the cold car, and does not emit white smoke after the hot car

This is because the gasoline contains moisture, and the engine is too cold, and the fuel entering the cylinder is not completely burned, causing fog points or water vapor to form white smoke. Winter or rainy season when the car is first started, white smoke can often be seen. It doesn’t matter, once the engine temperature rises, the white smoke will disappear. This condition does not need to be repaired.


Post time: Apr-23-2024