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I'm a believer that injector cleaning is snake oil, but now considering running that or some Sea Foam through the engine.
Just did the dreaded plug change on my 06 with 26,000 mi mostly used for short trips between home and work (carbon building kind). I had read in a post that you should run a tank of FI cleaner through before trying to remove. I added a large bottle of Techron with a little more than 3/4 tank which lasts me a couple of weeks of driving. The day before the removal I made a few full throttle passes to loosen things up a bit. The following morning I removed the plugs on a cold engine, following Fords TSB. I loosened them a quarter turn using a 3/8 drive beam type torque wrench, then soaked with PB blaster for an hour. Every plug except the # 1 plug on the passenger side came out by hand like butter. The carbon was fairly thick, but was soft enough where it could be wiped off with a rag. The #1 plug was still sticky and required a couple of shots of PB blaster and a easy touch with the beam torque wrench never exceeding 33 ft lbs. At 26,000 mi, I can't say for sure if the Techron and full speed passes did any good, but it sure didn't hurt. The new Autolite HT's supposedly can handle double the torque. I installed my HT0's with nickle anti seize, greased the boots with silicon torqued to 33 ft lbs, and hopefully I should have no worries for another 30,000-50,000 mi.
I hate reading threads like this... How much was the tool?
When I first bought my car in March of '08 the first thing I did was check the build date and plug type I had. Build date of August '07 and I have the two piece plug. I swapped them at 10K for the Champions and I have almost 40K on the car now.
I take out a plug or two at random every 6 months just to check for build-up. Can't say I have found any.
I tend to use Chevron or Unocal 76 (91 tune so 91 octane). When I get on the freeway, I GET ON the freeway. I normally hammer it all the way down the on ramp and then adjust my speed to merge safely on with the rest of the cars. Most of my driving is surface streets during the week so on the weekend I find reasons to take a freeway trip to blow the motor out.
Don't know if that's made a difference but it's fun doing it
08 S197 GT Auto: FRPP Strut Tower Brace, FRPP Bullitt CAI, Bama 91-P Tune, VBX remaned valve body with Superior Transmission Shift Kit.
Pending upgrades: Shaftmasters Aluminum 3.5" DS, FRPP 3.73 gears, Axle back exahust (?)
Originally Posted by LostBoyz
if you are getting 29mpg in your 5.0, you aren't driving it correctly
Oh wow, just read about your troubles with the plugs Ford_Dude. Man I feel your pain!
That Lisle tool sure is a lifesaver though and saves $$$$ in the end. Thanks for the tip to add to the thread, I hope people read all the way through so they know what could possible happen and what to expect before attempting the plug removal.
I haven't relayed my story for a while. I have an '06 GT. I've always used good preimum gas (Shell mostly) and full synthetic oil, changed at 5K miles. Several years ago I had about 40K miles and the stories about the 2 piece plugs were just starting to surface. I got all the goodies described in the Ford TSB and went to work, following the procedure to the letter. The first plug came out, screeched, but it came out. The second one snapped. I decided to turn it over to the dealer where I bought it. I had it trucked there. A couple of days later, I get a call. The service dude said "their best engine guy" had broked off 5 more plugs and they might even have to pull the heads. I'm freaking by now. The next day they called and said my car was done. They didn't have to pull the heads. When I went to pick it up, I was presented a bill for between $800 and $900. I paid it and left.
I went home and started sending emails. I contacted Ford Customer Service as well as the owner of the dealership. I told them I had had quite a few new Mustangs, but would never own another Ford. I didn't hear anything more for a while. A few weeks later I had my car in for a minor recall. While I was waiting in the lounge, the Service Manager came in and handed me a check (from Ford Motor Company) for the total amount of the spark plug repair. I have never heard of this happening to anyone else. A couple of weeks later, I pulled the new OE plugs they had installed and installed the one piece Champion plugs. I will never use those 2 piece crap plugs in my engine again. End of story
2006 Premium GT Convertible
Screaming Yellow, Black Top
Michelin Pilot Super Sport tires
18" "Fanblade Wheels"
CORSA Performance exhaust
Brenspeed 87 octane performance tune
Wayne 613 and I did our plugs this weekend. Pulled all 16 with no breaks! My GT has 44k miles and his has 60k (I think).
I can't believe they charged that much for crappy spark plugs GoldenPony...
I went with Brisk plugs and Wayne got the Autolite HT 0's. Both cars run much better now.
Yep, they screeched a bit for a couple, but they came out in one piece. 63.5k mileage.
I don't baby my car, but I do use good gas, am of course the only owner, and keep up with maintenance using pure synthetic oil. They were still coated in carbon, and the gap wasn't exactly factory spec anymore from the wear (not by a long shot).
I'm almost convinced that the sea-foam usage in a tank prior helped quite a bit, as well as the pb-blaster.
4.10s, 285rwhp/297rwtq - SCT, "we suck so you don't have to"
¨Those who would give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety.¨--Ben Franklin
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