Editing Z31/SENSORS/fuelinjector php (section)

=== Fuel Injector Failure Modes ===

There are two primary ways fuel injectors can fail:

-
Clogged Injectors:
* Often caused by dirt, debris, or bad fuel—especially common if the car has been sitting for a long time.
* The injector may still pulse and produce an audible click when supplied with power and ground, but little or no fuel is delivered.

-
Solenoid Failure:
* The internal solenoid can fail, causing the injector to stick either open or closed.
* Stuck Open: Injector constantly dumps fuel into the cylinder when the key is turned on. This causes the fuel rail to lose pressure and can wash the protective oil film from the cylinder wall. Excess fuel may dilute the engine oil, which can lead to bearing failure if left unresolved.
* Stuck Closed: Injector will not supply fuel to the cylinder, causing a dead cylinder and rough running.

[[Category:Imported from Xenonzcar]]