Ignition System Inspection
- Spark Plug Cable & Ignition Coil Inspection
- Visually/physically inspect the spark plug cable and ignition coil related to the misfiring cylinder(s) for the following conditions.
- Damage, cracks, carbon and flashover
- Poor connection or damaged harness
- Connected to the incorrect cylinders at the ignition coil and spark plug
- Measure the resistance of the spark plug cable related to the misfiring cylinder(s)
Specification: 5.6 kΩ/m ± 20%
- Measure the resistance of the primary and secondary ignition coil related to the misfiring cylinder(s)
Specification : Primary Ignition Coil Resistance :
Approx. 0.5 ~ 0.6 Ω at 20 °C (68 °F)
Secondary Ignition Coil Resistance :
Approx. 7.5 ~ 10.2 kΩ at 20 °C (68 °F)
- Was a problem found in any of the above areas?
YES
- Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to next step as below.
- Visually/physically inspect the spark plug cable and ignition coil related to the misfiring cylinder(s) for the following conditions.
- Spark Plug Inspection
- Visually/physically inspect the spark plug related to the misfiring cylinder(s) for the following conditions
- Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks
- Check for electrode gap : 1.0 - 1.1 mm (0.039 - 0.043 in.)
- Check if the spark plug for the relevant cylinder is lighter in color than the other plugs.
- Was a problem found in any of the above areas?
YES
- Replace or adjust as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to next step as below.
- Visually/physically inspect the spark plug related to the misfiring cylinder(s) for the following conditions