LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 1977 >> Cosmo Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Ignition Timing Control - Rotary >> Testing >> Leading Ignition Timing >> 1976-77 California Models
April 5, 2026: LEMON Manuals is launched! Read the announcement.

1976-77 California Models

  1. Connect tachometer and timing light to leading spark plug wire. Disconnect water temperature switch and connect a jumper wire to both connector terminals. See Figure. Start engine and set engine speed at 2000 RPM with choke knob.
  2. Observe timing marks on shaft pulley. Timing indicator should point between Yellow (leading) and Red (trailing) ignition timing marks. Timing should quickly advance past Yellow mark 104-156 seconds after engine is started.
  3. Connect voltmeter to positive terminal of leading ignition coil. Slowly increase engine speed to 3600-4400 RPM. Voltage should increase by 1-2 volts.
scientia non olet · About LEMON Manuals