On-Vehicle Inspection

DISTRIBUTOR INSPECTION

NOTICE: "Cold" and "Hot" in the following sentences express the temperature of the coils themselves. Cold is from - 10°C (140°F) to 50°C (122°F) and Hot is from 50°C (122°F) to 100°C (212°F).

1. DISCONNECT DISTRIBUTOR CONNECTOR
2. REMOVE DISTRIBUTOR CAP AND ROTOR
3. REMOVE IGNITION COIL DUST COVER

Ignition Coil





4. INSPECT PRIMARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between the positive (+) and negative (-) terminals.

Primary coil resistance:
Cold 0.38 - 0.55 Ohms
Hot 0.45 - 0.65 Ohms

If the resistance is not as specified, replace the ignition coil.





5. INSPECT SECONDARY COIL RESISTANCE
Using an ohmmeter, measure the resistance between the positive (+) and high-tension terminals.

Secondary coil resistance:
Cold 9.0 - 15.4 K ohms
Hot 11.4 - 18.1 K ohms

If the resistance is not as specified, replace the ignition coil.

Distributor





6. INSPECT AIR GAP
Using a feeler gauge, measure the air gap between the signal rotor and pickup coil projection.

Air gap: 0.2 - 0.4 mm (0.008 - 0.016 in.)

If the air gap is not as specified, replace the distributor housing assembly.





7. INSPECT SIGNAL GENERATOR (PICKUP COIL) RESISTANCE
Using an ohmmeter, measure the resistance between terminals G(+) and G(-).

Pickup coil resistance:
Cold 185 - 275 Ohms
Hot 240 - 325 Ohms

If the resistance is not as specified, replace the distributor housing assembly.
8. REINSTALL IGNITION COIL DUST COVER
9. REINSTALL DISTRIBUTOR CAP AND ROTOR
10. RECONNECT DISTRIBUTOR CONNECTOR