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