16-42 ELECTRICAL SYSTEM
Ignition Coil Installation
Connect the primary leads to the ignition coil terminals
and run the secondary cables according to the Cable,
Wire and Hose Routing section in the Appendix chapter.
[A] Front Ignition Coil
[B] Rear Ignition Coil
Ignition Coil Cover
Ignition Coil Inspection
Remove the ignition coils (see Ignition Coil Removal).
Measure the arcing distance with a commercially avail-
able coil tester [A] to check the condition of the ignition
Connect the ignition coil (with the spark plug cap left at-
tached at the end of the spark plug terminal) to the tester
in the manner prescribed by the manufacturer and mea-
sure the arcing distance.
3 Needle Arcing Distance
To avoid extremely high voltage shocks, do not
touch the coil body or leads.
If the distance reading is less than the specified value, the
ignition coil or spark plug caps are defective.
To determine which part is defective, measure the arcing
distance again with the spark plug caps removed from the
ignition coil. Remove the caps by turning them counter-
If the arcing distance is subnormal as before, the trouble
is with the ignition coil itself. If the arcing distance is now
normal, the trouble is with the spark plug cap.
If the coil tester is not available, the coil can be checked
for a broken or badly shorted winding with the hand tester.
Special Tool - Hand Tester: 57001-1394
The hand tester cannot detect layer shorts and shorts
resulting from insulation breakdown under high voltage.
6 mm (0.24 in.) or more
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