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No fire or Intermittent on One or More Cylinders:
- If the cylinders are only acting up above an idle, connect an inductive RPM meter to all cylinders and try to isolate the problem cylinders.
- Using a set of piercing probes, check the trigger DVA output as given below:
|
| |
Wire |
Read To |
Resistance |
DVA |
|
| |
Purple wire
White wire
Brown wire
|
Engine GND
Engine GND
Engine GND |
Open
Open
Open |
3V or more
3V or more
3V or more |
|
- NOTE: These triggers have the bias circuitry built into them, therefore you cannot measure the resistance like you could the older engines. In addition, there are four triggering coils used.
- Disconnect one of the CDM modules that are firing at a time and see if the dead module start firing. If it does, the module you just unplugged is bad.
|
High Speed Miss:
- Connect an inductive RPM meter to all cylinders and try to isolate the problem. A high variance in RPM on one cylinder indicates a problem usually in the switch box or ignition coil. Occasionally a trigger will cause this same problem. Check the trigger as described above under “No fire or Intermittent on One or More Cylinders”.
- Perform a high-speed shutdown and read the spark plugs. Check for water. A crack in the block can cause a high speed miss when the water pressure gets high, but a normal shutdown will mask the problem.
- Remove the flywheel and check the triggering and charge coil flywheel magnets for cracks or broken magnets.
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| ....end of Force Ignition Troubleshooting Section.
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| Page 14 - Index |
