I'll tell you a tip about spark plug porcelain - you DON'T need to break it out
#1
I'll tell you a tip about spark plug porcelain - you DON'T need to break it out
I've been working on a write up with pictures but I haven't had time to finish it. So to help out those that need help quickly this is what I did.
If your porcelain breaks flush with the tip, all you need to do is push it down into the tip with a punch. This is easier on the front plugs but tricky on the back ones. What you do is push the porcelain down and it stretches the grounding strap and it leaves about 1/4" of exposed tip at the top. DO NOT try to use a normal tap as it will NOT work. You MUST use a BOTTOMING tap to thread the exposed top. When you push the porcelain down it will chip a little so you will need to vacuum it out. When the tip is pushed down to the grounding strap it blocks the hole and doesn't allow shavings to enter the combustion chamber.
The back plugs are not so straight forward but I know how to get those out too with a similar method. It involves modifying a cariage bolt and an air impact hammer and CAREFULLY pushing the porcelain down.
Now I just need to get my truck running right from disconnecting the PCM and I will finish the write up that I started.
https://www.f150online.com/forums/en...-new-post.html
If your porcelain breaks flush with the tip, all you need to do is push it down into the tip with a punch. This is easier on the front plugs but tricky on the back ones. What you do is push the porcelain down and it stretches the grounding strap and it leaves about 1/4" of exposed tip at the top. DO NOT try to use a normal tap as it will NOT work. You MUST use a BOTTOMING tap to thread the exposed top. When you push the porcelain down it will chip a little so you will need to vacuum it out. When the tip is pushed down to the grounding strap it blocks the hole and doesn't allow shavings to enter the combustion chamber.
The back plugs are not so straight forward but I know how to get those out too with a similar method. It involves modifying a cariage bolt and an air impact hammer and CAREFULLY pushing the porcelain down.
Now I just need to get my truck running right from disconnecting the PCM and I will finish the write up that I started.
https://www.f150online.com/forums/en...-new-post.html
#4
#5
It works