Fuel Injector: Description and Operation

Fuel Injector:

FUEL INJECTORS
The fuel injector is a solenoid device controlled by the PCM that meters pressurized fuel to a single cylinder. When the PCM energizes the injector coil, a normally closed ball valve opens, allowing fuel to flow past a director plate to the injector outlet. The director plate has holes that control the fuel flow, generating a dual conical spray pattern of finely atomized fuel at the injector outlet. Fuel from the outlet is directed at both intake valves, causing it to become further vaporized before entering the combustion chamber.

DRIVEABILITY PROBLEMS
Fuel injectors will cause various driveability conditions if they will not open, are stuck open, leaking or have a low coil resistance.