How do you change the spark plugs on a 1999 ford e 150?

Answer 1

Well, to be blunt, with difficulty!! If it's a 5.4L V-8, you MUST WAIT UNTIL THE ENGINE IS STONE COLD (sitting without being started overnight or for at LEAST 8-10 hours). Any engine with aluminum cylinder heads NEEDS TO BE COLD or you'll strip the threads in the cylinder head. Next, you'll need to remove each individual coil pack (one per cylinder) using an 8mm socket. If you can't get to the coil pack(s), you'll need to remove components on the engine to get at them. Also, you'll need to remove the engine cover ("dog-house") inside the van which is fairly easy to gain access to the rear plugs. If it's a V-10, the same procedure applies. Once the coil has been removed, you'll need to spray a small amount of penetrating lubricant into each spark plug hole BEFORE attempting to "break" each plug free. Once plug is "broken free", an additional squirt of penetrant (NOT WD-40! Use PB Blaster if available, or equivalent), then GENTLY unscrew each plug, a little at a time; sometimes it helps to twist out slightly, squirt with penetrant, then work the plug back and forth until it feels smooth. If not, you'll strip the threads in the aluminum cylinder head and you're pretty much done-heli-coils DON'T WORK. It's NOT an easy job to undertake.