Fuel Injectors

Fuel injectors inject fuel into the engine cylinders based on signals from the ECM. The amount of fuel supplied depends on the injector opening time, i.e., on the pulse width of the voltage applied to the injector solenoid.
Inspection
PROCEDURE

1. With the engine idling, check the operation of the injectors by listening for clicking with a stethoscope or by placing a finger on them.
2. If there is no clicking, check that the connectors to the injectors are securely connected and check the output voltage of the control unit.

3. Disconnect the connector from the fuel injector and measure the resistance between the connector terminals.
Resistance: 15.9 ± 0.35 Ω
4. Connect the connector to the fuel injector.
Test yourself
A quick Hyundai Accent quiz: every answer comes with an explanation and a link to the manual page.