Contents: Distributor ↳ Initial ignition advance ↳ Ignition coil ↳ Spark plugs ↳
The Bosch or Lucas contact ignition system consists of a battery, ignition coil, distributor with breaker and spark plugs. The firing order is 1–3–4–2.
Distributor
| Brand | Bosch or Lucas |
| Drive | from the camshaft |
| Direction of rotation of the rotor | counterclockwise when viewed from above |
| Gap between breaker contacts: | |
| – Bosch | 0.4 – 0.5 mm |
| – Lucas | 0.4 – 0.6 mm |
| Angle of the closed state of the breaker contacts | 48 – 52° |
| Capacitor capacity: | |
| – Lucas | 0.21 – 0.29 μF |
| – Bosch | 0.235 – 0.315 μF |
Initial ignition advance
Engine code | Fuel | Ignition timing before TDC (+2°) | |
Ethylated Super | Unleaded. | ||
| GMA | N | 12 | |
| GPA | S | 12 | 8 |
| JPA | S | 12 | 8 |
| FUA | S | 12 | 8 |
| FUS | S | 12 | 12 |
| F6B/ F6D | S | – | 10 |
| LPA | S | 12 | 8 |
| LUC | S | 12 | 8 |
| LRA/ LRB | S | 12 | 6 |
| L4B | N | – | 12 |
| LUA | S | 12 | 8 |
| LUAE | S | 12 | – |
| LNA | S | 12 | – |
Ignition coil
| Brand | Bosch, Femsa, Polmot or Lucas |
| Primary winding resistance | 1.2 – 1.4 Ohm |
| Secondary winding resistance | 5 – 9 kOhm |
| Voltage on secondary winding, min | 25000 V |
Spark plugs
| Brand and type: | |
| – engines with a working volume of 1.1 and 1.3 dm³ | Motorcraft AGRF 22 or Bosch HR6DC |
| – engines with a working volume of 1.3 dm³, manufactured from 09.1988 | Motorcraft AGRF 22C1 or Bosch FR6DCX |
| Gap between electrodes: | |
| – Motorcraft AGRF spark plugs | 22 – 0.75 mm |
| – Bosch HR6DC spark plugs | 0.7 mm |
| – Motorcraft AGRF 22C1 spark plugs | 1.0 mm |
| – Bosch FR6DCX spark plugs | 1.1 mm |