626 V6-2496cc 2.5L DOHC (1995)
Spark Plug: Testing and Inspection
SPARK TEST
1. Remove the spark plug.
2. Connect the spark plug to a high-tension lead.
3. Hold the high-tension lead and spark plug with insulated pliers 5-10 mm (0.20-0.39 in) from a ground.
4. Crank the engine and verify that there is a strong blue spark. If not, replace the spark plug or high-tension lead as necessary.
INSPECTION
Check the following points. If a problem is found, replace the spark plug.
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Damaged insulation
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Worn electrodes
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Carbon deposits
If cleaning is necessary, use a plug cleaner or a wire brush. Clean the upper insulator, also.
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Damaged gasket
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Burnt
Plug gap: 1.0-1.1 mm (0.040-0.043 in)