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A shaft on which a small gear runs.
Noise heard from an engine when the ignition of fuel occurs too early (advanced) in the cycle. Also 'ping'.
Type of injector for an indirect injection engine. Similar to pintle but with additional small injection orifice for low engine speeds.
Type of injector for an indirect injection engine. Uses a spring-loaded needle that is raised by fuel pressure to allow a spray of fuel to enter the pre-combustion chamber.
Profile Ignition Pick Up Signal.
A joint in a pipe.
Term used to describe gases blowing past the piston rings.
The top of the piston.
Sealing rings usually made of cast iron. Fitted on to a piston to make a gas tight seal.