Spark Plug Thread Damage – 1997-2008 Ford Lincoln Mercury
Spark plug thread damage. The cylinder heads on some 1997-2008 Ford cars and light trucks with the 4.6, 5.4 or 6.8L two-valve engine can exhibit missing or stripped spark plug threads. A new kit, called LOCK-N-STITCH, is available to repair the tread damage. The kit contains special aluminum inserts and a tool to properly install them. … Read more