The change from liquid to a gas. When solvents leave a wet paint film, they usually do so by evaporation.

The speed at which any liquid evaporates.

A canister usually containing charcoal that prevents emissions from the fuel tank due to evaporation.

A radiator in the air conditioning system fitted in the heater and A/C housing. The refrigerant passes through the pipes in the evaporator and vaporises to absorb heat and therefore cool the air stream flowing into the vehicle passenger compartment.

This is what a candidates needs to produce to prove they have the skills required.

EGR Valve Position Sensor

Electronic vacuum regulator solenoid on EGR system.

A pressure relief valve that opens if pressure exceeds a set value. Often for safety reasons.

Gases from the exhaust bypassing a component, for example, the piston rings or a valve in a turbocharger.

Substances vented into the atmosphere from an exhaust system.