Checking Blocked Injectors

Checking The Spark Plugs
- Check spark plug color.

NOTE: It is very important that the correct spark plugs are used, see replacement part catalogues for P/N. Check the spark gap on the new spark plugs before installing them. The spark gap should be 0.7 - 0.8 mm.

- Is any spark plug lighter than the others?

Yes:
^ Proceed to Checking The Injector section below.

No:
^ Proceed to test step below.





Fault-tracing Information
- Replace all spark plugs.

NOTE: It is very important that the correct spark plugs are used, see replacement part catalogues for P/N. Check the spark gap on the new spark plugs before installing them. The spark gap should be 0.7 - 0.8 mm.

^ Then Proceed to Checking the Distributor Cap, Rotor and Ignition Cables section.





Checking The Injector
- A spark plug lighter in color than the others indicates that the cylinder is receiving too little fuel.
- Try a new injector.
- Replace all spark plugs.

NOTE: It is very important that the correct spark plugs are used, see replacement part catalogues for P/N. Check the spark gap on the new spark plugs before installing them. The spark gap should be 0.7 - 0.8 mm.

^ Then proceed to Checking Residual Pressure section.