Federal and Canadian
***UPDATED BY TSB# EN91-007, JUNE 1991***UPDATED BY TSB# ENG022, MAY 1990
1. Turn ignition switch on.
2. Using a voltmeter, ensure battery voltage at (+) side of ignition coil.
Standard Voltage: 9 - 14.5V
3. If voltage was not present, inspect fusible link, ignition switch, wiring and connectors between battery, ignition coil (+), and igniter assembly.
4. If no faults were found, proceed with this test. If faults were found and corrected, verify problem still exists prior to proceeding with this test.
Primary Coil Test:
5. Using an ohmmeter, measure resistance between ignition coil (+) and (-) terminals.
Primary Resistance (Cold): 0.4 - 0.5 ohms
Secondary Coil Test:
6. Using an ohmmeter, measure resistance between ignition coil (+) and the secondary terminal.
Secondary Resistance (Cold): 8.5k - 11.5k ohms
7. Check ignition coil for signs of carbon tracking, burned or discolored plastic, external leakage, or cracks in the housing.
8. If ignition coil resistance is not within specifications or physical damage is apparent, replace ignition coil.
Pick-up Coil Connector:
9. Disconnect primary wire connector at distributor.
10. Using an ohmmeter, measure resistance between terminals NE- and NE+.
Pickup Coil Resistance: 130 - 210 ohms
11. If resistance was not within specifications, replace distributor assembly. If no faults were found, proceed with this test.
Pick-up Coil Air Gap:
12. Using a non-magnetic feeler gauge, measure the gap between the signal rotor and its related pickup coil.
Air Gap: 0.008 - 0.016 in (0.2 - 0.4 mm)
13. If air gap is not within specifications, replace pick-up coil assembly.
14. Disconnect the vacuum hoses from vacuum advance diaphragm.
Vacuum Advance Testing:
15. Apply vacuum to diaphragms. Ensure that vacuum advance moves. If vacuum advance did not move repair or replace vacuum advance as necessary.
Centrifugal Advance Testing:
16. Turn the distributor rotor clockwise and release it. Ensure that distributor rotor returns counterclockwise.
17. Ensure that rotor shaft is not excessively loose.
18. If distributor rotor did not turn, return, and/or was excessively loose in the above steps, repair or replace centrifugal advance as necessary.
19. If no faults were found in this testing procedure, replace igniter unit.