IGNITION SYSTEM Distributor Ignition Coil Resistance 1. Connect ohmmeter probes across the positive and negative primary winding terminals of the ignition coil, and measure the resistance. Primary winding resistance at 20"!) (68 F): 1.0 - 1.3 fl Nat/.11 11(3 mI'I- 10a% Reslslance' x 1 range Q a) 3 5 E567 Connect ohmmeter probes to secondary wind- ing terminal and primary winding negative 3 terminal, and measure resistance. my -1 . N Secondary winding resistance at 20"C (68 F): 7,300 - 11,000 (2 Cap and Rotor Head 1. Check cap and rotor head for dust, carbon deposits and cracks. 2. Measure insulation resistance between electrodes an ignition coil and side of spark plug. Insulation resistance: More than 50 [M9] Insulation resistance / tester seessse 0 Less than specified value. . . Replace. 1 Check Vacuum Advance 1. Connect vacuum pump to the vacuum con- troller and gradually draw a vacuum while watching breaker plate movement. Check for smooth operation with no evidence of binding. sEL77so 2. Turn breaker plate right and left to check for freedom of movement.