Technical characteristics of the ignition system (Scorpio 1)

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Ignition sequence



OHC and DOHC engines 1–3–4–2
V6 Engine 1–4–2–5–3–6

Ignition system type



Engines with carburetor
ESC II
Engines with fuel injection system
ESC IV

Ignition coil



Type
Bosch, Femsa or Polmot
Primary winding resistance
0.72 – 0.88 Ohm
Secondary winding resistance
4.5 – 7.0 kOhm
Voltage on the secondary winding
min. 25,000 V

Spark plugs



OHC 1.8 dm³ engines without catalyst Motorcraft BFR 22 or BFR 22 C, Champion RF7YCC or RF7YC, Beru 18 K-6 BU, Bosch DR7BC
OHC 1.8 dm³ engines with catalytic converter Motorcraft BFR 22 C, Champion RF7YCC or RF7YC, Beru 18 K-7 BU, Bosch DR7BC
OHC 2.0 dm³ engines with carburetor without catalytic converter Motorcraft BFR 32 or BFR 32 C, Champion RF7YCC or RF7YC, Beru 18 K-6 BU, Bosch DR8BC
OHC 2.0 dm³ engines with fuel injection system without catalytic converter Motorcraft BFR 22 C, Champion RF7YCC or RF7YC, Beru 18 K-6 BU, Bosch DR7BC
OHC 2.0 dm³ engines with fuel injection system with catalytic converter Motorcraft BFR 32 C, Champion RF7YCC or RF7YC, Beru 18 K-7 BU, Bosch DR8BC
DOHC 2.0 dm³ engines with carburetor Motorcraft AGPR 22CD, Champion RF7YCC or RF7YC, Beru 14 FR-7 DU, Bosch FR7BC
DOHC 2.0 dm³ engines with fuel injection system Motorcraft AGPR 22CD, Champion RF7YCC or RF7YC, Beru 14 FR-6 DU, Bosch FR6BC
Engine V6 2.4 dm³ Motorcraft AGPR 22C, Champion RC7YCC or RC7YC; Beru 14 FR-6 DU, Bosch HR7DC
Engine V6 2.8 dm³ Motorcraft AGR 22C, Champion RC7YCC or RC7YC; Beru 14 FR-6 DU, Bosch WR7DC
V6 2.9 dm³ engine without catalytic converter Motorcraft AGPR 22C, Champion RN7YCC or RN7YC; Beru 14 FR-6 DU, Bosch FR7DC
V6 2.9 dm³ engine with catalytic converter Motorcraft AGRF 32C1 or AGRF 42C1, Champion RN7YCC or RN7YC; Beru 14 FR-6 DU, Bosch HR7DCX
Engine V6-24 2.9 dm³ until August 1993. Motorcraft AGЗR 22P, Champion RS9YCC or RS9YC
Engine V6-24 2.9 dm³ since August 1993. Motorcraft AGЗR 22С1, Champion RS9YCC or RS9YC



Interelectrode gap of the spark plug



Motorcraft BFR 22, BFR 32, AGRP 22 C, AGRP 22 CD
0.75 mm
Champion RF7YCC or RF7YC
0.8 mm
Champion RN7YCC or RN7YC
0.7 mm
Champion RS9YCC or RS9YC
1.0 mm
Beru 18 K-6 BU
0.7 mm
Beru 14 FR-7 DU
0.6 mm
Beru 14 FR-6 DU
0.8 mm
Bosch DR7BC
0.7 mm
Bosch WR7DC
0.8 mm
Bosch HR7DC and HR7DCX
1.0 mm

Distributor



Brand
Bosch or Motorcraft
Direction of rotation:
– OHC and V6 engines
counterclockwise
– DOHC engines
clockwise
Ignition advance angle
controlled by an electronic unit

Initial ignition advance angle before TDC with vacuum hose disconnected from electronic unit



Engines with carburetor on leaded gasoline 97
10°
Engines with injection system on leaded petrol 97
12°
Carburetor engines on unleaded petrol 95
Engines with injection system on unleaded petrol 95
8° (2.0 dm³)
Engines with injection system on unleaded petrol 95
12° (2.8 dm³)
V6 engines with injection system with catalytic converter
15° (2.4 and 2.9 dm³)
V6 engines with injection system without catalytic converter
12° (2.4 and 2.9 dm³)

High voltage wires



Resistance – min. 30 kOhm.

Tightening moments



Spark plugs:
- OHC engine
20 – 28 Nm
– DOHC engine
15 – 21 Nm
– V6 engine
30 – 40 Nm






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