Hey fellas got a few questions. Gonna do my spark plugs tommorow and got my plugs in today. Are the SP-515 the modified plugs or the original two piece? And what torque do you torgue em at? Wet or dry?

 

Those are the improved double platinum 2 piece plugs. Coat ONLY the shank with nickel antiseize, not the tip or the threads, and torque them to 25 ft/lb.

https://www.f150online.com/forums/v8...g-removal.html

 

Thank you sir! Imma get some picture up afterwards. Should be about 40 miles shy of 155,000. This could be a tough day..

 

Got a Lisle tool ready? Got plenty of carb cleaner?

 

Yes sir! Done prepared myself for disaster. Ran 3 bottle of techron through 3 tanks, a full 3 step fuel system flush and been running her hard to try and clean it out the best I can

 

Take your time and twist them out like you would running a tap into a hole.
1/16 turn out, 1/32 turn in, 1/16 turn out, 1/32 turn in. Go slow and "feel" your way.

 

The results are in! After 554,990 miles and 2 hours, yes 2 hours, all 8 plugs have been changed with out a single one breaking. I wouldve been embarrassed to pay a dealership the kinda money they want to do this job. Thanks again to the members of f150online.com for all yalls help!

 

you meant 155,00? that what you said before. Congrats! Saved yourself several hundred bucks.

 

Haha yeah defiantly not 554,000. But I'll put some pictures up tomorrow

 

Congratulations !!!!! an 04 with those miles usually equals a very long frustrating day on the plugs...You sir should get a medal !! Well deserved..slow and easy works most of the time. Congratulations once again and with the great feeling that comes with conquering a difficult project.

 

I sure anticipated a long stressful day to say the least. But my buddy is a certified mechanic so he knew his way around an engine (a fellow ford fan himself, buts he's got a powerstroke) it was very stressful but if you have any knownledge on how to operate a ratchet with extensions and a torque wrench then you can do this no problem. I dreaded doing it but I acuatlly enjoyed doing this job.
One thing is after inspecting the plugs I noticed that they didn't have alot of carbon build up. So maybe it's had a plug change before? Maybe one of y'all can tell when I upload pictures. The plugs look exactly the same as the new ones to me

 

What are the markings on the old plugs?

 

I think you really did yourself a favor with the 3 bottles of Techron and runn'in it hard. I wonder if anyone else has done anything similar (actually SAME) and still had trouble getting the plugs out whole. I decided some time ago that that would be the way I would go. I am a HUGE fan of Techron. After one tank with CONCENTRATED Techron, i've used a borescope and am amazed at how much carbon has been removed to BARE aluminum on the top of the piston.

 

The old plugs markings are: Motorcraft Platinum PZT 2FE 4C
Yes that techron can work magic. I ran 3 bottle for pretty much "insurance" purpose. Better to be safe than sorry

 

May or may not be original - PZT2F was in fact the factory plug.