ToughFX4

The sticker on my motor says it was built 1/28/08. V-8 5.4 3v.I think im good,but wanna hear it from someone else. Do i have the problem plugs? Also if i change the plugs should i change the coils packs? Does anyone recommend a certain plug to use. I have 51,000 miles on it.

ToughFX4

Anyone! Where's bucko?

kevhead75

Your plugs should be fine. I would replace with motorcraft plugs at the recommended interval. No sense in replacing coils unless you know they are not working properly.

shaynecsmith

They need to be replaced at 100,000 miles rsoughly

dos0711

If your coils have brown boots, your good. If they are black, then you have the problem plug.

Mod (Ret.)

Your answer can be found in the spark plug sticky post at the top of this forum...even it's title provides what you're looking for:

5.4L 3V Spark Plugs Engine Build Dates before 10/09/07

I believe you are safe with a 2008.

ToughFX4

Thanks bucko! Just wanted some opinions, I knew you'd stop bye...

Mod (Ret.)

Thank GATORB8 for his excellent research on that topic.

kshields2

Doing my plugs and two of them the threads and jam nut came out but the rest of the plug if just moving side to side I tried pulling and breaking it to use the tool but can't seem to get it I'm thinking about getting some long needle nose. Should I be pulling it out or breaking it (to then use the lisle tool) and if i get long needle nose i won't be able to use them on one that's on the furthest back any help is appreciated

F150Torqued

https://www.f150forum.com/f12/spark-...7/#post4176775