9000 L4-1985cc 2.0L DOHC (1986)
3 During the warm-up period, check (in the event of uneven idling) that all injectors are in proper working order. Hold a screwdriver or a
stethoscope against the black metal part of the injector. A clicking sound should be heard in the injectors.
a If a clicking sound is not heard in one or more of the injectors: See "Checking the injectors". See: Fuel Delivery and Air Induction/Fuel
Injector/Testing and Inspection/Checking the Injectors
b The injectors make a clicking sound but the engine still runs unevenly at idling speed:
Unplug one connector at a time from the injectors. Engine rpm should drop.
c If engine speed does not drop, continue with a complete inspection of the following systems:
- Fuel system
- Induction system
- Electrical system
4 When the engine has reached its normal working temperature, increase engine speed slowly to 3,000 rpm. Take a voltage reading across the
injector. The voltage should rise to 0.8 - 0.9 V. Allow the engine to drop to idling speed and then quickly accelerate it to 3,000 rpm. The voltage
should now rise temporarily above 0.8 - 0.9 V and then drop back to 0.8 - 0.9 V.
