Ignition system (late models) (Opel Ascona C)

Ignition system without breaker (1.8 and 2.0 l, since 1987) — general information

1. The ignition system types installed on large displacement models from 1987 onwards are as follows:

• 1.8L: EZ61 System (microprocessor timing system)
• 2.0 l: Motronic system

2. For each type of system, the ignition timing is adjusted automatically and brought into line with existing conditions. This is achieved through a central computerized control system that collects information from various sensors and components and then adjusts the ignition timing as needed. Therefore, the ignition distributor simply acts as a high voltage distributor.

3. When the Motronic system is installed, the control unit also regulates the fuel requirements, which are described in Section 5.

Ignition system (1.8 and 2.0 liters, since 1987) - service

4. The ignition system maintenance requirements on models equipped with the EZ61 or Motronic system are minimal:

• (a) Periodically check high and low voltage wires for cleanliness, continuity and secure connections,
• (b) Check and replace spark plugs,
• (c) Clean and check the condition of the distributor cap and rotor arm at regular intervals.

Ignition distributor (distributor) — (1.8 and 2.0 l, since 1987) - removal and installation

5. The ignition distributor on later models equipped with the EZ61 or Motronic systems differs in that the vacuum and advance speed are controlled automatically by an electronic control unit. Therefore, the ignition distributor on such models does not include any vacuum or centrifugal timing mechanisms. Its removal is carried out as follows.



6. Disconnect the high tension wires from the spark plugs and the high tension wire from the coil.

[Material was taken from a resource: www.opelbook.ru]

7. Unscrew the three screws securing the distributor cap and remove the cap (see photo 6.7).



8. Remove the insulator. This is an intermediate mount in the casing, through an O-shaped gasket located in a groove along its periphery, so remove the insulator carefully so as not to damage the rotor (see photo 6.8).



9. Using a 3mm Allen key, remove the two screws and remove the rotor (see photo 6.9 A and B).







10. If the camshaft gasket needs to be replaced, remove the rotor boss by simply pulling it out, then carefully remove the oil gasket (see photo 6.10 A and B).





11. Clean the housing, then carefully insert the new gasket into place using a suitable tool. Be careful not to damage the casing.



12. Lubricate the lips of the oil seal, install the rotor boss, aligning the bolt holes in the rotor and boss with the bolt holes in the camshaft flange (see photo 6.12).



13. The remaining installation operations are carried out by performing the above steps in reverse order. Replace the sealing ring in the insulator groove if the old ring is damaged, then lightly lubricate it to facilitate installation (see photo 6.13).

Ignition system control device (1.8 l, 1987 year of manufacture) - removal and installation

14. The ignition system monitor on 1.8L models equipped with the EZ61 system is located on the right side of the engine compartment and is attached to the front suspension strut mount.



15. To remove the control device, release the clamp and disconnect the electrical wiring plug (see photo 6.15).



16. Loosen the mounting screws and remove the device from its support bracket.

17. Installation is carried out by performing the above steps in reverse order.