3-28 Engine Electrical Industrial 1.6L
Spark Plug Wires Not Operating Properly
1. Check the routing of the wires, Improper routing
can cause cross-firing.
2. Check each wire for any signs of cracks or splits
in the wire.
3. Inspect each boot for signs of tears, piercing, arc
through, or carbon tracking. If the boot needs to
be replaced, twist it a half turn in each direction to
break the seal before pulling on the boot to
disconnect the wire.
Spark Plug Wire Resistance Test
Tools Required
J 39200 Digital Multimeter or Equivalent
1. Disconnect both ends of the wire that you wish to
check.
Important: Ensure that the wire terminals are
clean before proceeding.
2. Connect an ohmmeter lead to each end of the
spark plug wire.
3. Gently twist the wire while observing the
ohmmeter reading.
4. If the ohmmeter reads above 30,000 ohms, no
matter how long the wire is, or fluctuates from
infinity to any value, replace the wire.
Spark Plug Wire Routing
Wire routing must be kept intact during service and
followed exactly when wires have been disconnected
or when replacement of the wires becomes neces-
sary. Failure to route the wires can result in cross-
firing of the spark plugs or shorting of the wires to
ground. The correct routing of the spark plug wires is
shown in the illustration.
80363004
To Next Page
Loading...