found out my 97 5.4 has a missfire at cylinder #1. how hard is it to change out the coil? and which cylinder is cylinder #1?

 

going to be getting a new spark plug too so il need the spark plug gap, any info would be great. thanks guys.

 

nobody???

 

I think the gap is ..54 but that should be on that tag thats right in front of the radiator. Why not replace them all? one at a time? You could also ask auto zone or whatever. they'll know the gap for sure.
#1 is passenger side front..

 

the truck isnt anything were trying to keep around its pretty beat and has a ton of rust and miles. just trying to get there the winter plowing with it. passanger side front closest to the radiator is cylinder #1? great thanks jethat

 

Use a Motorcraft plug, no antiseize, torque to 28 ft/lb, and buy a DG508 coil on Ebay.

 

Plugs are sp-479 gaped to .54 and can be found at autozone and other places for about $2 each I think.

 

Another one gone...may its soul rest in peace when its final days come.

Yes

 

thanks for all the info guys greatly appreciated. any problems removing plugs on these older 5.4's or is that just the 04-07's?

 

No problems removing them but they must be put back with no anti-seize torqued to 28ft/lb is what is now recommended by most to avoid blowing out a plug. Plug breakage while removing was in the 3v motors.

 

You aren't going to find them that cheap. The part number for a 97 5.4 is SP459 and Rock Auto gets $4.26 for them.

 

My bad. Thought it was 98. confused with a similar post.

 

Fixed the missfire, runs great now and doesnt have the shakes anymore. May have only been the spark plug seeing the old one had more than double a .54 gap and almost nothing left of the electrode.....lol but whatever changed the coil and the plug and shes fine. Thanks again for all the help/info guys.