On-Vehicle Inspection
DISTRIBUTOR INSPECTIONNOTICE: "Cold" and "Hot" in the following sentences express the temperature of the coils themselves. "Cold" is from -10°C (14°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: 0.36 - 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 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 - 0.4mm (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 the terminals.
Pickup coil resistance (G + and G -):
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 ROTOR AND DISTRIBUTOR CAP
10. RECONNECT DISTRIBUTOR CONNECTOR