I've got a 2001 s/crew with the 5.4 the truck has 130,000 miles I figured it might be time for a tune up. So I called the local Ford garage and they told me if it ain't broke don't fix it. Even though there is no problems I figured with this many miles why not do a tune up. So was the dealer right or should I do a tune up if so what all needs to be done.

 

130,000 miles on the plugs you need new ones and you will need 8 new coils but they are called cop . dont go to ford for this it will cost to much. i bet you you are looking $800 or more at ford. the cop are about $80 each. a lot of people on here have got them from ebay all 8 for about $100 to $150. and only use motorcraft or autolite plugs. do not use bosch!!! and dont put the plugs in to tight just snug

 

I agree, except for the Autolites - even though they make Motorcraft, they didn't work in my 98 5.4L .. The Favorites for these motors are Motorcrafts (failsafe), NGK, Denso Iridiums..

Denso's may be the best plugs - It takes 5,000 volts less to fire a DENSO Iridium Power spark plug versus a conventional platinum spark plug.

Torque for the plugs - 2001 is 12-16 lbs..

Don't over-tighten the COPs - they are suppose to be loose on the bushing.

Global Automotive is the Ebay store for COPs , Look up "COP's Deal" in the search bar in the engines forum, I posted Kevins link (store owner).

Use plenty of dielectric grease....

Use anti-sieze on the plugs.

Use Matts instructions in Technical Articles to assist if you need it..

 

Are the bosch really that bad? I just put the platinum 4s in mine over the motorcrafts. Seems to run smoother though.

 

Bosch are the worst possible plugs for these motors.. Motorcraft plugs are OEM .

Ford engineers and product designers use Motorcraft plugs as an application for a reason. They function properly in there modular motors. Putting a plug that has a terrible history in these motors is not recommended.

 

great looks like i'll be changing them again soon.Guess i should of cheacked here first.

 

What can happen with plus 4's

Click on links for the pics -


https://www.f150online.com/galleries...004&anum=10613

https://www.f150online.com/galleries...005&anum=10613

 

Thanks for the pic, i wish i didn't see it though I just made more work for myself but atleast they will come out easy

 

Well , I guess I should mention Mitch who comes around once in awhile. - He's the only guy I know that runs Bosch plugs in his 97 5.4L . He doesn't run the plus 4's , but he's ran Bosch plugs over 50,000 miles. Only guy I know that's got away with it..

 

So detonation w/ them is pretty common? They only have about 100 miles on them ya want me to send them to you to see if you can get away with them

 

I ran the +4's for a while in my 99. Probably 30-40k. Then I ended up with one blowing out (not the plug's fault) and then I had a few that looked like the ones above in the 20k after that. I had autolite's in after that and then just the other week changed over to NGK's at 178k.

 

I know what yall just said about the bosch but I bought the +4 iridiums(fusions? I think). at like $10 a plug I dont hate not to use them but a rebuilding a engine is alot more, sooo I have also heard three diff opinions: first being that I should never use any bosch, I should use copper plugs (this guy was a tard) and lastly dude at auto zone had the 4+ in his 4.6 just like mine and told me they were good so I dont know

 

Ya well to me $60 is cheaper than a new 5.4 in worse case scenario

 

Well I did actually try Bosch plugs in 2002 I think it was , my truck ran like sh^t for about 30 seconds then quit all together.

I also tried the Autolites, they ran for about 40 miles before I received random and multiple misfires..

Look at the Autolites after I took them out - they got so hot they turned different colors lol. The look Identical to the Motorcrafts but , there not of the same heat range obviously..

 

so which should i get next?