Repair Manual

17
IGNITION AND INJECTION
17 - 15
EXAMPLE:
- piston 4 at compression = ignition spark; about 20 KV (drawing 10).
- piston 1 evacuation = auxiliary spark; about 300 V (drawing 11).
The two voltages can be viewed through an oscilloscope and an adapter.
Fig. 10 Fig.11
The reference values, measured at the ignition coil connector are as follows:
- for secondary windings: R
1-4
= R
1-3
= 10 – 16 KÙ at 20°C
- for primary windings: R
1-2
= R
3-4
= 0.4 – 0.6 Ù at 20°C
The reference values for spark plugs wires:
R = 3000 – 7000 Ù at an environmental temperature of 20°C
DESCRIPTION OF THE SYSTEM
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