What to Do When the Engine Has Excessive Exhaust?
2 Answers
Excessive engine exhaust is mainly caused by incomplete combustion or mechanical failures in the engine, such as severe wear of the cylinder liner and piston, excessive clearance between the cylinder and piston, etc. If the exhaust is abnormally excessive, the solution is to have it inspected and repaired at a maintenance shop. Car owners should promptly visit a repair shop for inspection to prevent more serious faults. Below are other reasons for excessive engine exhaust: 1. Incorrect adjustment of the fuel injection advance angle. If the fuel injection advance angle is too small, the fuel cannot burn completely, resulting in a large amount of black smoke being emitted. 2. Excessive clearance between the cylinder and piston, allowing too much engine oil to enter the cylinder. Overfilling the oil pan can lead to excessive oil splashing into the cylinder during splash lubrication. High-temperature gases from the cylinder entering the oil pan can contaminate and thin the oil, affecting lubrication and causing excessive exhaust. If the fuel system, intake system, and fuel injectors are not regularly maintained, carbon deposits and sludge can form. Therefore, the vehicle's fuel system must be cleaned and maintained periodically. 3. If the piston rings or cylinder liner are severely worn, the seal between the piston and cylinder liner becomes ineffective, ultimately leading to severe exhaust from the side breather, insufficient power in the diesel engine, and possibly blue smoke emission.
If my car's exhaust pipe is emitting heavy smoke, I usually pull over to check it first. If the car feels sluggish or the exhaust becomes thicker, it might be due to incomplete combustion. I've encountered this situation before—when black smoke was coming from the engine exhaust, and upon inspection, I found severe carbon buildup on the spark plugs. I took it to the repair shop, replaced the spark plugs, and also cleaned the fuel injectors. Now the car runs smoothly again. During regular use, I make sure to perform routine maintenance, checking the air filter and oil quality every 5,000 kilometers. When changing the oil, I also inspect the catalytic converter. Excessive engine exhaust not only increases fuel consumption but can also worsen air quality. Identifying problems early saves a lot on repair costs. The car is my own, so taking good care of it is always the right thing to do.
