I have a friend that has a 2003 F150 V8 3 valve V8 motor, when he went to change the spark plugs some of them broke off. How do you remove the part that is still in the head?

enter image description here

Here is what a new one looks like, so that extended part is stuck in the head.

enter image description here


1 Answer 1


I see this all the time unfortunately.

You need this tool

enter image description here


You may need a long 8mm drill bit.

You need something to knock the porcelain that's stuck in the ground strap out. Most of the time when the plug breaks like that you have to chip away at it with a long punch and use compressed air to blow it out of the plug well or long needle nose pliers.

Once the porcelain is out you need to tap the group strap with a 9mmx1.0 tap.

Then it's time to use the tool. This is basically a puller. You insert the tube into the plug well and then thread the pulling tool into the ground strap.

Then you tighten the top nut by hand and the ground strap comes out.

When you go to install the new plugs coat the ground strap with silver anti-sieze.

Depending on which plug broke this can take anywhere from a few minutes to hours.

The Ford TSB.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .