Small Gasoline Engine Won't Start?

[ArthurFitz]

Possible causes include intermittent spark plug ignition or ignition coil failure. Below is relevant information about automotive engines: Classification: Based on the working method of the intake system, they can be divided into four types: naturally aspirated, turbocharged, mechanically supercharged, and twin-charged. Principle: A four-stroke gasoline engine mixes air and gasoline in a certain proportion to form a good combustible mixture, which is drawn into the cylinder during the intake stroke. The compressed mixture ignites and burns to produce thermal energy, and the high-temperature, high-pressure gas acts on the top of the piston, driving the piston to perform reciprocating linear motion. Mechanical energy is output externally through the connecting rod, crankshaft, and flywheel mechanism. A four-stroke gasoline engine completes one working cycle during the intake stroke, compression stroke, power stroke, and exhaust stroke.