What is the reason for excessive oil in the combustion system of the first exhaust cylinder in a Focus?

[Lane]

Ford Focus cylinder combustion system excessive oil may be caused by incomplete engine combustion, requiring inspection and cleaning of engine carbon deposits to improve combustion efficiency. Below is extended information on cylinders: 1. Single-acting cylinder: Only one end has a piston rod, with air supplied from one side of the piston to generate pressure, which pushes the piston to extend, returning via spring or gravity; 2. Double-acting cylinder: Alternating air supply from both sides of the piston, outputting force in one or two directions; 3. Diaphragm cylinder: Uses a diaphragm instead of a piston, outputting force in one direction only, reset by spring. It has good sealing performance but short stroke; 4. Impact cylinder: A new type of component that converts compressed gas pressure energy into high-speed (10-20 m/s) kinetic energy of the piston for work. The impact cylinder adds a cover with a nozzle and drain port.