2.0L petrol engine
1. Disconnect the high voltage wires shown in the figure.
Note. Disconnect the high voltage wires from the spark plugs by the lug.
2. Using a spark plug wrench, remove the spark plugs.
3. Check the spark plugs for damage to the electrode, thread, seal, body. If defects are found, replace the spark plug.
4. Using a feeler gauge, check the gap between the spark plug electrodes. The gap should be 1.0-1.1 mm.
2.7L petrol engine
1. Remove the motor protective cover.
2. Disconnect the necessary cables from the engine management system.
3. Disconnect the throttle control cable.
4. Remove intake manifold.
5. Disconnect high voltage wires.
6. Using a spark plug wrench, remove the spark plugs.
7. Check the spark plugs for damage to the electrode, thread, seal, body. If defects are found, replace the spark plug.
8. Using a feeler gauge, check the gap between the spark plug electrodes. The gap should be 1.0-1.1 mm for a cold plug, 0.7-0.8 for a hot plug.
9. Check the condition of insulation A and lugs B of high voltage wires for damage, if found, replace.
10. Check the resistance of the wires by connecting the device to the tips. The resistance should not exceed 10 kΩ per meter of cable, otherwise replace the wire.