5.4 engines SUCK, Ford has been making them since about 1997. Form there the spark plugs blow/or rip out of the engine. This has happened to me 2 times now. Ford tells me its a common problem. I hate to tell you but spark plugs coming out of the engine on there own is not a common problem, thats a engine defect. This problem happened with a F250.5.4, the truck of my dreams. DONT buy a ford with a 5.4 in less you have a warranty that covers that engine for as long as you own it, and also you will need another car while your truck is in the shop! Go on to Goolge.com and type in Engine Problems with ford 5.4 you will get a million web page of the same problem.

Ford is aware of thousands of defective heads that have already failed and many have caused vehicle fires. Money before people, ford refuses to acknowledge any defect, blaming everyone but themselves, included the mechanic that never changed my plugs, claiming the new plugs were put in at the wrong torque. By the way the ford mechanic later acknowledged that the ford rep. was aware that the plugs in my engine were original factory installed. I currently own four ford vehicles, I will NEVER buy a ford product again. If you have or had a problem with your ford spitting a plug, PLEASE file a complaint with NHTSA, they are basically useless except, that when a few people eventually get barbecued in their vehicle fire at least NHTSA can't deny knowing about it.