Mazda 1984 RX7 Spezifikationen PDF herunterladen (Seite 59)

IGNITION SYSTEM

rticle Tex

efficient combustion while reducing HC and CO emissions.

As the primary circuit is broken in the leading and trailing

ignition coils, a voltage surge occurs in the secondary circuit of

the ignition coils. This high voltage is transmitted through the

leading and trailing high tension wires to the distributor, rotor and

spark plugs.

An emission control unit is also included in the ignition

control system, along with different sensing switches to provide

proper timing under varying engine operating conditions.

ADJUSTMENTS

RELUCTOR-TO-

PICK-UP COIL AIR GAP

1) Remove distributor cap and rotor. Turn distributor shaft

until the extended tooth of the reluctor (signal rotor) aligns with

core of pick-up coil. See Fig. 2.

2) Using a feeler gauge, check for .020-.035" (.5-.9 mm) air

gap. If gap is incorrect, replace pick-up coil and bearing assembly

or distributor drive shaft, as required.

Fig. 2: Adjusting Distributor Air Gap

Check air gap at all teeth and both pick-up coils.

IGNITION TIMING

1) To adjust leading timing, loosen distributor lock nut,

and rotate distributor housing until correct timing is obtained. See

Fig. 3.

2) To adjust trailing timing, loosen the screws securing the

trailing vacuum unit. Move the vacuum unit outward (to advance) or

inward (to retard). Retighten screws when correct timing is obtained.

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Mazda 1984 RX7 Spezifikationen Seite 59