Federal Vehicles
DISTRIBUTOR INSPECTION PROCEDURES1. Disconnect distributor connectors
2. Remove distributor cap
3. Remove rotor
4. Remove ignition coil dust cover
INSPECT IGNITION COIL
NOTE:"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).
5. Inspect primary coil resistance
- Using an ohmmeter, measure the resistance between the positive (+) and negative (-) terminals.
Primary coil resistance:
Cold: 0.36 - 0.65 Ohms
Hot: 0.45 - 0.65 Ohms
^ If the resistance is not as specified, replace the ignition coil.
6. 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.
INSPECT DISTRIBUTOR ASSEMBLY
7. Inspect air gap
- Using a feeler gauge, measure the air gap between the signal rotor and pick up 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.
8. Inspect pick up coil resistance
- Using an ohmmeter, measure the resistance between the terminals.
Pickup coil resistance:
Cold: G (+) and G (-) 185 - 275 Ohms
NE (+) and Ne (-) 370 - 550 Ohms
Hot: G (+) and G (-) 240 - 325 Ohms
NE (+) and NE (-) 475 - 650 Ohms
^ If the resistance is not as specified, replace the distributor housing assembly.
9. Reinstall ignition coil dust cover
10. Reinstall rotor
11. Reinstall distributor cap
12. Reconnect distributor connectors
INSPECT IGNITER
See Spark Test procedure in the Ignition System Testing Procedures.
Initial Inspection and Diagnostic Overview