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Re: 5.4 ford spark plug years
Posted to Technical Discussion Forum on 12/10/2013 2 Replies

From Wikipedia:

Spark plug issues

2-valve 4.6 L, 5.4 L, and 6.8 L engines found in many 1997--2008 Ford, Lincoln, and Mercury vehicles have an issue with stripped or missing spark plug threads in the cylinder heads. Ford acknowledges this issue in TSB 07-2... Login to read more.

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