Colt Vista FWD L4-1795cc 1.8L SOHC (1994)
Fuel Injector
ACTUATOR INSPECTION
Fuel Injector
CHECKING OPERATION SOUND
Using a stethoscope, listen for an operation sound ("chi-chi-chi") of injectors during idling or during cranking.
Check that as the rotating speed increases, the frequency of the operating sound also increases.
NOTE: that even if the injector you are checking is not operating, you will hear the operating sound of the other injectors.
NOTE: If no operating sound is heard from the injector that is being checked, check the injector drive circuit. If there is nothing wrong with the circuit,
a defective injector or engine control module is suspected.
Fuel Injector
Measurement of Resistance between Terminals
1. Remove the injector connector.
2. Measure the resistance between terminals.