Ignition System
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• | Inspect for proper ignition voltage output using the following
steps: |
- | Clip the J 26792
spark
tester to engine ground. |
- | Connect one end of a spark plug wire to the J 26792
spark tester. Leave the other end of
the spark plug wire to the coil being tested. |
- | Connect one end of another spark plug wire to the other coil
tower. Connect the other end of the spark plug wire to ground. |
- | Crank the engine while observing the J 26792
spark tester. A spark should be observed. |
- | Repeat the above steps for each coil. |
• | If spark is not present at the plugs, inspect for the following
conditions: |
- | Inspect the coils for cracks, carbon tracking/arcing or a resistance
value outside the specified range. |
Coil Resistance 5K-7K ohms (5,000-7,000 ohms ) - | Inspect the spark plug wires for signs of arcing/cross firing,
cracks, carbon tracking, plug boot damage, pinched, improper routing or a
resistance value outside the specified range. |
Spark Plug Wire Resistance 1 968 ohms per meter (600 ohms per foot)
| Important: : Spraying the secondary ignition wires with a light mist of water may
help locate an intermittent problem. Ignition components will arc to ground
when a secondary component is faulty.
|
- | Ignition System Wiring--Loose ignition module feed or ground
connection, or damaged system wiring |
• | Remove the spark plugs and inspect for the following: |
- | Burned or damaged electrodes |
- | Improper heat range or reach |
• | If the spark plugs are gas or oil fouled, the cause of the fouling
must be determined before replacing the spark plugs. |
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