1. Warm up the engine to operating temperature and turn it off.
2. Connect the tachometer and stroboscope according to the manufacturer's instructions.
1 - ignition distributor; 2 - connection to the battery stroboscope; 3 - stroboscope; 4 - ignition cable for cylinder 1; 5 - spark plug of cylinder 1; 6 - capacitive strobe terminal
3. On some models, it is necessary to connect the MAZDA system switch to the diagnostic plug located on the casing of the left suspension strut (SST 49B0199A0). Set switch A to position 1, test switch to SELF TEST.
4. If this device is not available, you should bridge the GND and TEN contacts with a piece of wire. Which models are subject to this requirement?
5. If present, disconnect the vacuum hose of the vacuum device on the distributor and plug it with a suitable clean bolt. With a dual vacuum device, it may be that only one of the two hoses needs to be disconnected.
6. Start the engine and let it idle. Required number of revolutions when checking.
7. Turn off all consumers of electricity (radio, heated rear window, etc.) and air conditioning.
8. Light the mark on the crankshaft belt pulley with a strobe light.
9. The ignition timing is correct if the yellow mark on the belt pulley is stationary against the corresponding ignition timing on the toothed belt guard. Ignition timing values in the table.
10. If the ignition timing does not match the required, loosen the clamping bolt on the distributor and adjust the ignition timing by turning the distributor.
11. Tighten the clamping bolt on the distributor with force 25 Nm.
12. To take out a bolt from a vacuum hose and to put on a hose on the distributor vacuum device.
13. Disconnect the system switch or jumper from the diagnostic plug.
14. Turn off test devices with the ignition off.
15. In the workshop, you can still check the centrifugal and vacuum displacement of the distributor at different speeds. This is only required if the ignition system is faulty.
16. Check idle speed, adjust if necessary, see Chapter Power system, carburetor, fuel injection system.
Required values
Engine | Ignition timing | Adjustment speed |
E1, E3, E5 | 4±1°before TDC | 850±50 rpm-1 |
B3 carburetor | 2±1°before TDC | 850±50 rpm-1 |
B3 injection | 0±1°3 | 850±50 rpm-1 |
AT 5 | 6±1°before TDC | 850±50 rpm-1 |
AT 6 (SOHC) carburetor | 6±1°before TDC | 850±50 rpm-1 |
AT 6 (SOHC) injection | 7±1°before TDC4 | 1025±25 rpm-1 |
AT 6 (DOHC) | 12±1°before TDC | 900±50 rpm-1 |
BP (SOHC) | 5±1°before TDC4 | — 2 |
BP (DOHC) | 10±1°before TDC4 | — 2 |
1 - Automatic transmission: idle speed + 100 rpm.
2 - The idle speed is adjusted automatically.
3 - Disconnect the hose only from the lower vacuum device.
4 - Connect the MAZDA system plug (SST 49B0199A0).