Again, built Ferd tuff (kwality it job won). This just backs my thoughts that everything anymore is being built like crap!

 

Who would have thought that Ford could have taken something so simple and routine as changing spark plugs, and made it such an expensive and complicated thing?

 

Alot of the probs hear are because of the aluminum heads on the 5.4. Aluminum doesnt mix well with other metals and if the plugs they are using are made of a really poor metal quality...then you will get the seizing. You would think that Ford would be installing some sort of anti Oxidant compount on the threads of the plugs such as Noalox or something.
I am an electrician by trade and use that stuff on anything aluminum I can get my hands on that might have the possibility of sezing up. From the Screws that hold the cover of aluminum light fixtures together to even the bases of HID lighting bulbs. Never had a problem with Seizure or oxidation when I used or anyone else used this stuff.
But what the hell...the warranty expires after 30K so after that its the customers responsibility...Gotta save the money yanno...that anti ox is expensive

 

I read all the posts of this thread and I learned I should be careful of when to change plugs and what type of plug to insert. However, I did not learn any part# or noun (name) of the plug or where to purchase them. Can anyone tell all of us what plug is the best to insert to avoid siezing, malfunction, breaking, and mismatch to engine specs.

I changed plugs in my previous rigs (up thru '93) like othes change socs. I used Dielectric Grease to avoid siezing on both the plug thread and plug wires that attach to the plug. Never a proglem.

Now I read where there are several types of metals that are available for plugs, some good, some bad. But no one seems to know the descriptlion of the plugs or where to purchase them. Hey guys, we are only talking about plugs here. Help!

 

sorry i cant help u on the part #s but i would stay ford check out my gallery for what the plugs look like

 

73
Thanks. I have actually seen the plugs for my 3v, '04, 5.4. At Pep Boys I asked for the plug by vehicle description. The store-mech clerk said they only stocked Motorcraft, Part# AGSF12FM1F4. My Haynes shows a part# of 12405. The clerk let me see the plug, but with an astonished surprise he said the plugs cost $8.50 each, plus tax. Since I was buying the plugs in anticipation of future use the clerk allowed me to save face and not purchase the plugs.

Now I read in this thread that there are types of new and old metals and upgrades to the plugs. I am hoping to find out without having the Parts Clerk at the local Ford Dealer screw me over is what type of plug is the correct, current plug for my 5.4.

 

your are in luck my friend i just happen to have them on my desk i got my ride in sept 03 plug # PZT 2fe new plug same as the new mustang
# PZT1F stock # 4120 is the upgrade plug

 

73

Sending you Private Mail.

Dazz

 

73mach1,

I looked at the plug pictures in your gallery. One thing I did notice is that the plugs looked to have either started to back out on their own(aka 97-02 plug ejection), or were not tight to begin with.

I say this because the beveled shoulders where the plugs should seal to the head were black with carbon. If this is carbon on the sealing surface, then a loose plug can be the only explanatation.

I hope this is not the case. The freezing of the plug in place is bad enough, but a possible revisit to plug ejection will be horrible.

Look at the bright side, maybe the carbon is there to secure the plug in order to prevent future ejection.

 

I haven't been to scared about some of the problems the new F150s have. But I must admit this thread is really scaring me.

 

Does anyone know if the 4.6 has the alum block like the 5.4?

 

The 4.6 is not aluminum its Iron...Heads and all

 

And I thought the 5.4 had an iron block as well.

 

The 5.4 does have a Iron Block...the heads are a aluminum alloy

 

Sure a lot of confusion on what plug was original and what it is superceeded by.
Have not pulled my plugs yet at 22,500 miles but will this weekend. Ordered plugs on line and they were listed as PZT2FEF4. They arrived yesterday and they sent a superceeded number, PZT2FF4. A few other owners had PZT1** series plugs that were originally in their engiines. It seems Ford makes a lot of plug changes.

When reinstalling the new plugs it is wise to coat the threads with hi temp anti-seize. I also ordered a plug socket/extension just for the 5.4L 3V engine.
The socket and exension are all one unit. Plugs were $6.40 each. Let us hope for no plug siezures or breakage.