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Spark plug replacement Lincoln Navigator 1998 - 2012 petrol 5.4 V8

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Lincoln Navigator 1998 - 2012  | 5.4 V8 Spark plug replacement

  • time 1 hour
  • difficulty 2
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Caution: Ford has issued a Technical Service Bulletin (TSB 08-7-6) stating that attempting to remove the spark plugs is likely to result in the extended electrode of the plug breaking off in the cylinder head. This TSB pertains to 4.6L three-valve engines built before 11/30/07, and 5.4L and 6.8L three-valve engines built before 10/9/07. Engine build date can be found on a label affixed to the left valve cover. We highly recommend entrusting this procedure to a Ford dealer service department or other qualified technician equipped with the necessary special tools. If you do decide to attempt spark plug replacement, we recommend that you obtain the Ford TSB (it can be obtained via internet search) and follow the procedure exactly

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