daddyratty

After coil #2 nearly derailed our Christmas road trip a few weeks ago, I set out to get the plugs changed in the F150. The truck made it through our 900 mile round trip. Two days after we got back it took starter fluid to get it going. Two days after that it was dead.

I've owned the truck since July. It's got about 225k on it, and this weekend I took out the factory spark plugs.

Needless to say they were shot. I'm impressed the truck was even able to run. I gapped a couple of them just to check, and one of them just barely made the ring at .085" (recommended for this vehicle is .054-.056. The other one I tested was probably closer to .100"

So part of this post is to share how impressive it is that the truck ran on such poorly gapped plugs. But the other part is to ask about pesky #8. The head on the hex screw (9/32" -- 7mm will work as it's actually 7.1mm) is so tight under the fuel lines that I cannot use the ratchet. A regular old-fashioned wrench is a possibility, but it's a real bugger.

I'm curious if anyone has any tips or tricks for getting this one. The truck is multitudes stronger with 7 of the plugs having been replaced, but I know it's just a matter of time before plug #8 burns a coil or something else.

VTX1800N1

I always use a1/4" drive ratchet with an extension and 7mm socket and never have I had a problem getting to the coil bolt.

Dusterdude72

I cant recall what exact tools I used being that I did my tune up back at the beginning of last summer.

But I didn't have any issues with getting any of the bolts out of any of the coils.

There may have been a tricky one...but I likely refused to let the coil be smarter than me and grabbed the right tool for the job lol.

You can get it.....just take a long hard look at it and come up with the right combo of tools and it will be out before you know it!

primalurges

Try a standard size. It may be a little loose but they should be pretty lose to begin with. Maybe a swivel adapter and a couple of extensions may help.

g8rfan

I just did mine Friday night and #8 was definitely a pain but I just kept changing out 1/4" extensions until I found the right fix. If I remember right, I think I ended up having to connect two dissimilar length extensions together.