Wow that plug is bad!!!!!!!

 

I just did my plugs last week, 08 5.4 With 84k miles, ran 2 tanks of sea foam, plugs came out like butter and clean. Once in a while, i always used seafoam in fuel.

 

I drove it like that for a LONG time never thinking twice it was a loose plug and like Patrick said to me I was about to be the first 5.4 3v owner in history to eject a plug. I mean they are supposed to stick and not shoot out.

The sound became very prominent after the headers so i always thought it was an exhaust leak concerning the headers but it was an exhaust leak concerning a plug. Also that #8 COP was fried literally.

 

Coworker's 2008 F150. Ford quoted him 625 bucks to do the plug change. I did it for less than half of that cost.




Built 8 days before the updated heads/plug change over

 

Just wondering...

I am at 75k on my second set of plugs (SP507's)...should I attempt a change without the Lisle tool? I wanted to do it at 60k but money is tight...

Regards!

 

I think running them to 60k isnt bad. Use Techron prior and do them on a HOT engine.

 

Have a Lisle tool available just in case. I think Napa keeps them in stock.

 

My daughters boyfriend is a mechanic at the local Toyota Dealership...he has a friend at the Ford Dealership...I'm trying to get him to change the plugs...he probably has the tool...

I would like to try it myself...I've never paid for a plug change...always done it myself...the plug change at 80k was a freebie from the Ford dealer during the replacement of the head and catalytic converter...they were going to re-use the old plugs, and I shamed them into a plug change...

 

Another 8 for 8 came out clean last night without breaking any. It was on my cousins 06 FX4. He was experiencing heavy pinging under load at higher RPMS. PCM was pulling timing trying to reduce ping, it almost felt like the truck was starving for fuel at 3500-4500 RPMS. Occasionally he was also getting extended cranking before the engine fired up.



#1 and #5 had chips in the porcelain right at the base of the plug near the electrode tip. Not sure if this is what was causing the pinging under high load higher RPMS

 

The plugs fixed all that ? How many miles on the plugs?

 

64k I think. Hes running 2" lift and 35" tires so its takes more power under load to accelerate

 

68k about 30k with the big tires. And hes done some towing/hauling as well. It was time.

he just called me so happy that the truck is running great today

 

Jumping in an old thread with a question.
Pat, when you use the impact to remove them, are you hitting the trigger and holding it in reverse until it comes out or going back and forth reverse, forward, reverse etc until they ease up?

 

full WOT on throttle in Reverse until the plug is all the way out




here's my draw full of my removed plugs, including my special plugs that came out. The boxed up plugs are for a 2v 4.6 so disregard the part number

 

I'm surprised your customers let you keep the plugs. I'd want to keep mine like a trophy

But everytime I look at this thread it makes me want to change mine Soo bad.. Even though I've got very low mileage, I've had the truck for 10 years since new and they've been bugging me since day one. So, I decided this spring to go though with it and already started using Techron in preparation

There like having splinters.. You just gotta get them OUT..