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Mazda 1983 RX7 - High Tension Wire Resistance; Distributor Adjustment; Ignition Timing Adjustment; Firing Order and Distributor Rotation

Mazda 1983 RX7
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TUNE-UP - ROTARY
Article Text (p. 2)
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Sunday, August 26, 2001 05:54PM
distributor cap. Using an ohmmeter, measure resistance of wires while
gently twisting wires. If resistance is not to specifications, or
fluctuates from infinity to any value, replace high tension wire(s).
HIGH TENSION WIRE RESISTANCE
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
Application Ohms
All Models ........................................... 4880 per Foot
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
ADJUSTMENTS
DISTRIBUTOR
All models are equipped with Mitsubishi electronic ignition
with 2 pick-up coils. Air gap is non-adjustable.
Fig. 1: Firing Order and Distributor Rotation
IGNITION TIMING
NOTE: On vehicles equipped with automatic transmission, place
selector lever in "D" position and block the wheels.
1) Warm engine to normal operating temperature. Connect a
tachometer, then connect timing light to leading (lower) spark plug of
front rotor. Start engine and run at idle speed.
2) Check ignition timing and rotate distributor to correct if
necessary. Tighten distributor lock nut and recheck timing.
3) Connect timing light to trailing (upper) plug of front
rotor. Start engine and check timing. If not correct, loosen vacuum
unit attaching screws. Move vacuum unit in or out to adjust trailing
timing. Remove test equipment.

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