Amigo 4WD L4-2559cc 2.6L SOHC (4ZE1) (1993)
Fuel Injector: Testing and Inspection
ELECTRICAL TEST
A faulty injector will cause the ECM to store a diagnostic trouble code (DTC). Refer to COMPUTERS AND CONTROL SYSTEMS /
DIAGNOSIS, TESTING AND INSPECTION PROCEDURES.
Operational Test
OPERATIONAL TEST
-
Start engine and idle.
-
Using a stethoscope, listen to each injector.
-
"Clicking" should increase as engine speed increases.
LEAKAGE TEST
Fuel Rail
-
Remove common chamber.
-
Remove injectors with fuel rail connected.
-
Apply battery voltage to the fuel pump connector.
Fuel Rail
-
Fuel leakage should be less than 2 drops per minute.
-
Replace injectors above limit.
-
Use reverse procedure to install.