Checking Ignition Coil and Ht Leads

TEST CONDITIONS:
- Ignition coil and leads should be at a temperature of about 20°C (68°F).
- All leads must be disconnected from components when taking measurements.





CHECKING IGNITION COIL
- Check outer casing for cracks etc.
- Measure resistance across terminals 1(-) and 15(+).
- Resistance is 1.1 - 1.3 ohms.





- measure resistance across terminal 1(-) and the high tension terminal.
- Resistance is 9.6 - 11.6K ohms.





CHECKING HT LEADS
- Resistance of HT lead between distributor and ignition coil should be 2 - 3.5K ohms which is equivalent to 5.6K ohms per meter.
- Spark plugs suppressor resistance is 5K ohms.
- Resistance of cable connector on distributor cap is 1K ohm (each lead).