Just going from memory but they boots are maybe an inch longer with with the spring up in them to where I don't think they would touch the sparkplug at all.

 

well i dont have a 5.4 3v in front of me and i dont know how far the boots go into the bores but since global wont do anything for you then i'd just put one in and see what happens. what could it hurt? if it dont go all the way down then just put the old coil back in. maybe someone updated the boots? you wont know until you try.

 

stock boot on the right, with new global cop and boot on the left.

 

i'd go ahead and try it. it may just slide over the plug more. like i said if its too long that you cant mount the coil then just put the old coil back in for now. just put the new one on and if it fits right then pull it back out, put dielectric grease inside the boot and stick it back in and drive it. it may just be updated just to prevent water from getting all in the boot where the spring contacts the plug.

 

I bought my ebay cops off these guys for 79.95 http://cgi.ebay.com/ebaymotors/ws/eB...m=110371884963

they got here in 2 days and they have emailed me twice thanking me for fast pay and making sure i was satisfied..

seem, like good folks!

 

the problem they are having is with the dg511's which are for the 3v engines. those are the dg508's which are for the 2v engines

 

That does tell us that "alanisdeals" is also a good vendor, might as well add them to the list.

 

They are longer but fit just fine, it not better. Just went out and swapped the boots and springs back over and fit like a glove. Truck runs like a champ now after 8 new plugs and cop's.

 

Wow I was really looking for a significant difference between the two but with the exception of the boot being a 1/4" longer they look identical. I think someone also said the spring was a 1/4" short in the boot. Since the boot has to be removed to apply the dielectric grease anyway then trim the boot to the same length as the old boot with a razor blade then the spring will be right at the end as it should be. Shouldn't be a problem. I think if they are left as is there is the possibillity the spring may not seat on the plug connector correctly as well as extra effort to secure the boot down on the plug ceramic. When I did mine the last time I stretched the coil spring 1/8" or so below the boot to ensure i didnt miss the connector. Not to mention using an extra finger wipe of dielectric grease on the plug ceramic to make sure the 35 year old spark plug socket slipped off of the plug with the foam insert sill in the socket but also helped the boot to slide down. For all it's worth go forth grasshopper proceed. Let us know the results.

 

Well I was a little late on my reply seems like my driving advisor needed consultation. Between yardwork changing oil and washing the truck sraying roundup on the weeds growing up through the driveway cracks she feels neglected. So as soon as the race is over I promised I would cook her a burger on the grill. Sounds great glad it worked out for ya.

 

New player in town right. I see they have a 12 month warranty, and customer service sounds good.

 

Ju015dd: Thanks!

That is EXACTLY the same "difference" I have on mine. I noticed that they were different, but went ahead and tried one to see if it would fit. Perhaps I wasnt mashing them down hard enough, but I do think I applied enough pressure to get them fully seated. Even then it was too long. When I went to bolt in the coil, it would "bend" the boot over to make the connection.

The spring came all the way to the end of the boot, less maybe 1/8".

If I felt good that it is the same coil, I'd buy the exact boots and put them on. I am just a'skeered that the coils are not a match and could do damage.

With all that being said, and after spending 2 lunch hours looking up sparkplug changing procedures, can anyone please direct me to a link with all the TBS regarding changing these? 04 5.4 3v

Thanks all again!

 

I took pity on you and looke dit up.

https://www.f150online.com/forums/3146012-post8.html

 

Thanks Blue!!

 

You might want to check this out too (it's for the '99-'03 though):
http://videos.streetfire.net/video/F...nge_202174.htm

How often do the sparkplugs break when removing them even after using carb cleaner to soak the carbon? I have 120,000KM on mine and don't want to be fishing porcelain out... Rare or a 'normal' occurrence?