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What is the proper spark plug gap of a 97 Mercury cougar 4.6 L v8?

The recommended spark plug gap for a 1997 Mercury Cougar with a 4.6L V8 is 0.052 to 0.056 inches (1.32 to 1.42 mm). Always consult your owner's manual for the most accurate information, as slight variations can occur depending on the specific engine configuration and spark plugs used.