What is the reason for oil spraying from the engine exhaust pipe?
2 Answers
Engine exhaust pipe oil spraying is caused by a damaged car valve oil seal, and the solution is to go to a repair shop to replace the oil seal. The car exhaust pipe, also known as the car exhaust pipe hose, is installed between the engine exhaust manifold and the muffler, allowing the entire exhaust system to have a flexible connection. This helps in reducing vibration and noise, facilitates installation, and extends the life of the exhaust muffler system. The engine exhaust pipe is mainly used in light vehicles, micro vehicles, and buses. Its structure consists of a double-layer corrugated pipe covered with a steel wire mesh sleeve, with clamping rings on both ends. To achieve optimal noise reduction, the corrugated pipe can be equipped with an expansion joint or mesh sleeve inside.
When I first started researching cars, I noticed this issue. Oil coming out of the exhaust pipe simply means the fuel wasn't completely burned in the engine and got expelled directly. Possible causes include: a faulty fuel injector spraying too much fuel that can't be fully combusted; insufficient air intake creating an overly rich fuel mixture that doesn't burn completely; or worn piston rings in an aging engine allowing oil to leak from the cylinders into the exhaust. Another common scenario is turbocharger seal failure leaking oil into the exhaust system. I recommend not ignoring this - it increases fuel consumption and can damage the catalytic converter over time, leading to costly repairs. Best to check the oil traces and smell, try simple fixes like replacing spark plugs or air filters, and consult professional mechanics if problems persist.
