Spark plug Helicoil?

[Yupster Dog]

If your motor is an '01 motor it would have PI heads. If you want to confirm it, look with a flashlight and mirror just above the front exhaust bolt and you should see the head's part number and a PI under the part number
.

I don't say it enough, Thank You for all you do here.

 

[JamaicaJoe]

Soak with pb blaster and let it sit, is the most common way I have heard of here. And try to remove with the engine hot is another.

Did you watch the video? doesn't it explain all that?

No the video did not.

 

[Yupster Dog]

No the video did not.

Thank you @Hamfisted for saving the day!

 

[Pete Costanza]

I've replaced a decent amount of plugs that shot out. There may be some validity to them blowing out after plug replacement due improper torque, but that's not the whole story. A lot of them were blowing out prior to any plug replacement. It was a defect in both cylinder head and spark plug design. It happened on Ford modular engines in the late 90's-early 00's with the 2 valve heads (4.6, 5.4, 6.8), but for some reason it was less likely to occur on 4.6's. I would drill out what was left of the threads. Vacuum into the cylinder. Start the engine with the plug hole open to push out any remaining particles that were in the cylinder. Use a tap to create new threads. Repeat process of vacuuming and starting engine to remove any debris. Insert new steel thread insert with loctite and swedge it into place. Install updated Motorcraft plug with more threads. Voila. Never once had a comeback or any related issues from this process. Something a lot of people never bring up is that they start making noise a little while before they blow out. It starts to sound like an exhaust leak and at that point, you may be able to torque the plug back up and save yourself the hassle.