What Causes Oil to Spray from the Exhaust Pipe?

[DiBella]

Oil spraying from the exhaust pipe is caused by: 1. Faults in the piston, cylinder liner, piston pin, or piston rings. In this case, the damaged parts need to be identified and replaced. 2. Severe wear or poor sealing between the valve stem and valve guide, resulting in excessive clearance, which leads to oil leakage. Prompt repair is necessary. Engine oil is the lubricant used in engines. Composed of base oil and additives, it serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and act as a shock absorber. It is often referred to as the 'blood' of the car.