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LP Engine G430(3.0L) Igntion System
Spark Plug Wires
General Description
The spark plug wires are a carbon-impregnated cord
conductor encased in an 8 millimeter diameter silicone
rubber jacket. Silicone wiring will withstand very high
temperature and is an excellent insulator for the higher
voltages.
Silicone is soft, pliable, and therefore, more
susceptible to scuffing and cutting. It is extremely
important that the spark plug cables be handled with
care. They should be routed so as not to cross each
other, or be in contact with, other parts of the engine
to prevent rubbing.
NOTICE: For proper operation, it is necessary to keep
ignition wires and distributor clean and free of any dirt
or corrosion.
Resistance Testing
1. Disconnect both ends of ignition cable (rotate boot
and pull at the boot only) being tested and clean
terminals.
2. Set ohmmeter on high scale and connect ohmmeter
to each end of cable being tested. Twist cable
gently while observing ohmmeter.
3. If ohmmeter reads above 25,000 ohms or flucuates
from infinity to any value, replace cable being
tested.
4. If the resistance of each cable is not within the
following bands, replace the cable being test-ed.
0 to 15 inch cable 3,000 / 10,000 Ohms
15 to 25 inch cable 4,000 / 15,000 Ohms
25 to 35 inch cable 6,000 / 20,000 Ohms
Spark Advance Curves
Figure 6-16 Spark Advance Curve - G430 Engine EST Distributer
131-051
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