'07Convert

I bought all the stuff (tool, carb cleaner, nickel anti-seize, dialectic grease, etc.). Studied the process. Got all eight plugs out in one piece (no problems). Cranked the engine before putting in the new plugs to avoid hydro-lock. Put in the new plugs.

Went to crank it, and it would not turn over. Thought it could be a coil connection problem. Took them all off, one-by-one, and put them back on. Went to crank, wouldn't turn over. Removed all plugs again checked them and put them back on. Put coil packs back on. Went to crank it, no turn over. Slept on it (pissed off). Woke up and unplugged the negative battery cable (to reset computer). Went to crank it, negative.

Now, sitting at the dealership typing this trying to figure out what went wrong...

BTW - Nice to meet everyone.

05mu5tang

Dont know about cranking without plugs in there...

pebkac

I did it to make sure not hydro lock... I am, knock on wood, still running strong...

houtex

Not turning over is quite a list, but shouldn't have anything to do with the plugs and packs not being there. Unless the computer got burnt out because a wire was near enough to a ground to cause that to happen... but that's sorta supposed to happen anyway... so I'm goin' no on that.

It's gonna be unrelated. Bad starter or bad ground or something.

Unless you mean 'would not start' and not actually 'no turn over'..?

Oh, and howdy, pleased to meet ya, 'vert!

05mu5tang

Spark plug gods were with me on this one... Just took my time and used pb spray

houtex

Gratz!

05mu5tang

When i changed my plugs and then went to turn on my car my dte read 0 miles to empty and i had a half tank of gas.. Anyone had this issue before?
Btw i disconnected my battery while installing new spark plugs..

Boomer

I am going to attempt this before the end of Mustang season.
Just turned 60k on my 05.

I don't have the TSB in front of me but I thought it also mentioned cranking it to prevent hydrolock and clearing the cylinder.
The only thing that I don't believe was in there, but a friend mechanic suggested, was to remove the fuse for the fuel pump so when your cranking it it's not dumping fuel into the cylinder. Thoughts on that?

05mu5tang

Make sure u have the lisle spark plug tool handy.. Cuz the first time i did my plugs i broke two of them..

Glenn

I didn't pull the fuse and only turned it over after using a shop vac with a 1/2 hose taped into the sucking end of the vac. I also used the motorcraft carb cleaner listed in the ford plug change instruction guide. I used some other stuff first with not so good results.

Glenn

Boomer

That was purchased before the plugs

05mu5tang

Good!! Best of luck with ur spark plug swap...

Lime GT

m05fastbackGT

Pete! If you haven't purchased your new plugs yet, consider going with Brisk racing spark plugs, as their a one piece designed plug..

A friend of mine has them in his 07 GT with a Roush supercharger and says they work really fantastic for him.. He also told me that Brenspeed offers them at the lowest price as well..

At any rate, when it comes time to swap mine out, I'll most definitely be purchasing the Brisk plugs for sure..

70monte

What year did Ford start using the one piece design spark plug in the 4.6L and why won't they work in the earlier year engines?

Wayne

pebkac

2005-2008.5 when the head was redesigned to eliminate the 2 piece plug.. You can tell with coil pack color change. I think black vs. brown. black being 2 piece.

cdynaco

Beginning Dec 07 was the manufacture date the new heads were used on the 4.6L3V. Here's the brown boot that are used with the new ones:



The heads were redesigned to accept shorter plugs. The old 2 piece were longer (the extension below the threads is where the carbon builds) so the new plugs won't work in the old heads. Also, notice the different width of the threads.

Vermillion06

So has anyone taken spark plugs out that have nickel anti-seize on them? Did it really help keep the plugs from breaking off?

I pulled my stock plugs at 15k and put anti-seize on them and put them back in. I'm at 74k now and was thinking about changing the plugs soon.

70monte

Thanks for the information. I was thinking of trying one of the one piece plugs on my fiancée's 07 GT before it gets more miles on it. She is only at 15,500 miles.

Wayne