Coil & spark plug changing.
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Senior Member
Joined: Jun 1999
Posts: 360
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From: Fort Lauderdale.Fl.
Coil & spark plug changing.
When you change the plugs in your truck is it wise to also change the coil that sits on top of the plug.
How much will I be looking to spend. (5.4)
thank
you
How much will I be looking to spend. (5.4)
thank
you
Senior Member
Joined: Jun 2000
Posts: 1,167
Likes: 0
From: Anchorage
That will be pretty expensive. Go to www.fordpartsonline.com
I believe they run under $28.00 a piece. Instead I would just do an ohm test on each coil and see if they're within specs.
I believe they run under $28.00 a piece. Instead I would just do an ohm test on each coil and see if they're within specs.
Senior Member
Joined: Apr 2002
Posts: 2,003
Likes: 0
From: Dallas
unless youve got a bad miss...
and changing the plugs didnt get rid of it...i wouldnt bother...just be carefull pulling the boot off the plug....go down as low as you can go...better yet get a boot tool from the parts store when you pick up the plugs...looks like a pair of needle nose pliers with a hook to them and padded grippers on the end..good luck
Senior Member
Joined: Feb 2002
Posts: 341
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From: Lewisburg, PA
If you are changing plugs on your 5.4 be prepared for a long day.
I changed mine last week and it was at least a 3-4 hour job. Also be aware that you must remove the fuel system rail on the drivers side of the engine in order to remove the last 2 plugs on that side. My advice, if it isn't broke don't fix it. My plugs had 67K on them and looked great. However, if you still want to change the plugs be aware a set of wobble extensions, a 5/6" Spark Plug socket with universal, and at least 1-6" extension and 2-2" extensions will help with the job. Also it will require you climbing into the engine bay to remove the back plug on both the passenger and drivers' sides of the engine. I warn you in advance this is not a job for the faint of heart. Also be sure to use anti-seize compound on the new plugs and dielectric grease on the coil pack boots. Also have some WD-40 to spray on the plugs that don't want to turn. I would not replace any of the coil packs unless you have been having a problem with them. Also you will need a 7mm socket to remove the screw that holds each coil pack on. Be careful not to drop the screw or it will disappear into neverneverland. However, if you tackle this job I hope everything goes well and you have no problems.
Mark
98 Lariat 4x4 Supercab, SB
I changed mine last week and it was at least a 3-4 hour job. Also be aware that you must remove the fuel system rail on the drivers side of the engine in order to remove the last 2 plugs on that side. My advice, if it isn't broke don't fix it. My plugs had 67K on them and looked great. However, if you still want to change the plugs be aware a set of wobble extensions, a 5/6" Spark Plug socket with universal, and at least 1-6" extension and 2-2" extensions will help with the job. Also it will require you climbing into the engine bay to remove the back plug on both the passenger and drivers' sides of the engine. I warn you in advance this is not a job for the faint of heart. Also be sure to use anti-seize compound on the new plugs and dielectric grease on the coil pack boots. Also have some WD-40 to spray on the plugs that don't want to turn. I would not replace any of the coil packs unless you have been having a problem with them. Also you will need a 7mm socket to remove the screw that holds each coil pack on. Be careful not to drop the screw or it will disappear into neverneverland. However, if you tackle this job I hope everything goes well and you have no problems.
Mark
98 Lariat 4x4 Supercab, SB
Senior Member
Joined: Feb 2002
Posts: 341
Likes: 0
From: Lewisburg, PA
TexfordD, be advised on the 5.4 you can not get on the boot it is attached directly to the coil pack and that sits directly on top of the spark plug, which in turn sits in a 6" deep hole on the intake side of the head.
