Diagnostic Aids
- An engine analyzer is used to diagnose problems in the secondary side of the ignition system.
- Visually inspect the engine compartment to ensure all vacuum hoses and spark plug wires are properly routed and securely connected.
- Examine all wiring harnesses and connectors for insulation damage, burned, overheated, loose or broken conditions.
- Ensure battery is fully charged and all accessories are turned off during testing.
- An engine analyzer or lab scope and DIS Adapter (Rotunda 007-00044) should be used in these testing procedures.
NOTE:
If this portion of the diagnostic procedure is to provide accurate results, it is essential that the calibration of your engine analyzer be maintained. Refer to your equipment manual. If this is not available, an estimate of the calibration can be made by connecting the spark tester (D81P-6666-A or equivalent) to a properly operating ignition system and measuring the firing voltage of the spark tester only. Do not include the firing voltage of the rotor-to-cap gap. The spark tester firing voltage should be approximately 28 k/volts.