Civic (All Federal Models, 1500 Calif. Man. Trans.)

1. Connect a tachometer, connect vacuum gauge to vacuum advance hose, then start engine.
2. Check for vacuum. If there is vacuum at 3500 (at idle on 1500 Federal Man. Trans.), go on to step 3  ). If there is no vacuum, check hoses and connections between distributor and carburetor insulator block or carburetor port for obstructions or leaks.
3. Connect vacuum pump to vacuum advance diaphragm and start engine. Draw 6 in. Hg vacuum. If timing advances, system is okay and test is complete. If timing does not advance, replace vacuum advance diaphragm and retest.

Fig 1: Civic 1500 Ignition Timing Controls (Calif. Auto. Trans. Only)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Civic Ignition Timing Controls (1300 Federal Man. Trans., 1500 Calif. Man. Trans., All Federal Auto. Trans.)

Courtesy of AMERICAN HONDA MOTOR CO., INC.