Ignition Coil: Testing and Inspection

IGNITION WIRES




1. Inspect wires for cracks, damage, burned terminals and for improper fit.
2. Measure the resistance of wires to their distributor cap terminal. Move each wire while testing to check for intermittent breaks.
Resistance: 13.6 - 18.4 kOhms/m (4.15 - 5.61 kOhms/ft) at 25 °C (77 °F)
If the resistance exceeds the above specification, inspect ignition wire to distributor cap connection. Clean connection or replace the ignition wire with a new one.

IGNITION COIL

1. Disconnect ignition coil harness connector.




2. Check resistance as shown in the figure.
3. For checking secondary coil, remove distributor cap.







4. Check resistance between ignition coil harness connector terminal 8 and coil tower metal tip 9 (secondary terminal) on the distributor head.
If NG, replace distributor.