Ignition coil

IGNITION COIL

The high voltage in the ignition system is guaranteed mainly by the energy accumulated in the ignition coil. The coil is formed of two copper windings with an iron core, overlaid on one another and insulated from one another by the different potential.

The current of the primary winding is cut off in correspondence of the firing point and after the accumulation phase. In the same instant, the magnetic field drops inducing a spark voltage in the secondary winding.

REMOVING/REFITTING

• Disconnect the battery (-) terminal.
• Remove the air flow meter (see specific paragraph).

1. Disconnect the high voltage cable from the ignition coil.

1. Remove the plastic protection, then disconnect the low voltage cables from the ignition coil.
2. Slacken the fastening screws and remove the ignition coil complete with support bracket.

POWER MODULE

REMOVING/REFITTING

• Disconnect the battery (-) terminal,

1. Disconnect the electrical connection from the power module.
2. Slacken the two fastening screws and remove the power module complete with support bracket.

IGNITION DISTRIBUTOR

The purpose of the ignition distributor is to distribute the high voltage leading from the ignition coil to the single spark plugs. The ignition distributor is installed on the left-hand cylinder head and its rotary brush is turned directly by the camshaft.

REMOVING/REFITTING

• Disconnect the battery (-) terminal.

1. Disconnect the high voltage cables from the ignition distributor.
2. Slacken the three fastening screws and remove the distributor cap.

4 ÷ 5 Nm
0.4 ÷ 0.5 kgm