Table of contents: Carburetor engines ↓ Injection engines ↓
Checking and setting the ignition is performed using a stroboscope.
The pulley crown has installation marks at 5° intervals. The first mark is located 20° before TDC, and the last one is 5° after TDC. The mark corresponding to TDC is marked with yellow paint. The arrow marks the pointer on the front cover.
1. Warm up the engine, check the idle speed, turn off the ignition.
Carburetor engines
2. Disconnect the hose from the vacuum regulator (or pressure sensor hose on engines with a neutralizer), plug the hose.
3. Connect the strobe light according to the manufacturer's instructions.
4. Start the engine and point the light at the crankshaft pulley. At idle, the illuminated mark should be opposite the pointer.
5. If adjustment is necessary, loosen the distributor bolts and turn the distributor housing until the mark aligns with the pointer.
6. Tighten the bolts and recheck the ignition timing.
7. Check the operation of the centrifugal regulator, for which make sure that when the engine speed increases, the scale on the pulley crown seems to shift "forward" relative to the pointer, and when the speed decreases to idle, the illuminated mark should again be opposite the pointer.
8. Connect the hoses and make sure that the ignition timing has been advanced and the advance angle is within the norm.
9. Otherwise, the vacuum regulator is faulty (or pressure head sensor) or there is a leak in the hose.
10. Stop the engine and disconnect the strobe light.
Injection engines
11. Disconnect the connector from the throttle position sensor.
12. Check and adjust the ignition (see pp. 3–5).
13. Stop the engine and disconnect the strobe light.
14. Connect the connector to the throttle position sensor.