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Ignition coil
Inspection
1. Continuity test
1)
2)
Primary coil
Check for continuity between the blue lead of the
ignition coil and black/white'lead of the ignition coil
with a radio tester.
Secondary coil
"Check
for continuity
between
the blue lead and
high-tension lead using the same tester.
2. Performance test
1)
2)
64
Condenser
Test
for reduced
capacity of leak by connecting
the test probes of a radio tester as shown. Discard the
condenser if the insulation is leaking or its condenser
is reduced.
Ignition coil
Even though continuity is ensured, an ignition coil
may provide poor performance after a long period of
use. To test the coil, connect the tester power supply
wire
to a fully charged
6 V battery. Make other
connections of the tester following the instructions
furnished by the tester manufacturer. Turn the service
tester selector knob to IGNITION TEST and measure
the maximum distance where sparks jumps across the
gap regularly.
NOTE:
Re-connect the high tension wires in reverse if sparks
appear as B in Fig. 5—6. Sketch A shows normal test
condition.
Fig. 5-6 3-point spark tester
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