What happens if the engine exhaust pipe is not connected?
2 Answers
If the engine exhaust pipe of a car is not connected, it may cause engine noise and abnormal engine operation. The vehicle may fail to meet emission standards, which also has an impact on the environment. Below are the functions of connecting the exhaust pipe in a car: 1. Promotes exhaust combustion: The car exhaust pipe extracts engine exhaust under certain specific conditions and sends part of the exhaust back to the intake manifold, where it mixes with fresh air-fuel mixture and re-enters the cylinder to participate in the combustion process. 2. Improves emissions: Since the exhaust cannot burn, it reduces the combustion speed and temperature inside the cylinder, thereby improving emissions and reducing the content of pollutants.
Last time I worked on my car myself, I didn't properly connect the engine's ventilation hose before taking it out for a drive. As a result, there were obvious oil stains leaking under the hood, and I could smell a strong odor of engine oil. After checking some materials, I found out that this hose is used to release the pressure from crankcase gases. If it's not connected, the pressure builds up too much, which can damage the oil seals and cause oil to start leaking out. After driving for a few days, I noticed the engine had trouble starting, lacked power during acceleration, and fuel consumption increased noticeably. What's worse, those exhaust gases were directly released into the environment, causing significant air pollution and potentially corroding parts near the engine. My advice is that if you find the hose disconnected, stop using the car immediately and find the tools to reconnect it properly - don't wait until a small issue turns into major repairs. I later bought a new hose to replace it, and only then did the engine return to smooth operation.
