The maintenance - Ford Focus
 Introduction
 2. Engines
 3. System of greasing of the engine
 4. Cooling system
 5. The power supply system
 6. Management of the power unit and the fulfilled gases
- 7. Ignition system
   - 7.1. The general data
      7.1.1. Two sparks of ignition simultaneously
      7.1.2. Gauge SKR signals are a basis for spark formation
      7.1.3. Car elements the ignitions connected with system
   7.2. The ignition coil
    7.3. Spark plugs
    7.4. Work with ignition system
 8. Coupling
 9. A transmission
 10. A drive of forward wheels
 11. A forward suspension bracket
 12. A back suspension bracket
 13. A steering
 14. Brake system
 15. An electric equipment
 16. System of release of the fulfilled gases
 17. Wheels and tyres
 The appendix
 Schemes of electric connections

Ford Fokus>> Ignition system>> The general data>> Two sparks of ignition simultaneously
In a design there are two coils of the ignition one of which operates candles of 1st and 4th cylinders, and another – 2nd and 3rd. Each of coils submits a spark simultaneously on both cylinders. So in 1st and 4th cylinders the spark slips simultaneously, but the working mix ignites only in that cylinder in which the piston is in ВМТ in the end of a compression step. An operating procedure of cylinders on engine Focus 1—3—4—2.