Stubborn spark plugs

[javaman34]

Hey everyone,
I'm trying to install new plugs and wires in the Bronco, but I can't get the old plugs out. Can't even get them to budge. Any ideas how to get them out without striping them out?

[spectre6000]

Cast iron or aluminum heads?

[javaman34]

Cast iron I believe.

[dieseldoc]

Soak them with pb blaster.......l3t sit over night.
Now 5hat is why high temp anti-seize is used.

[96EXXLTinCO]

X2 with dieseldoc. PB blaster is the key to open that door, and anti-seize isn't an option, it's a requirement. In my book anyway.......

[javaman34]

Ok. Thanks guys. I always use anti-seize when doing plugs, but I was not the one that installed these things ones. Thanks again.

[spectre6000]

Also, make sure you use a proper spark plug wrench. Nothing sucks work than breaking one off... I've seen a few of those Ford blocks, and those plugs are in there at a weird angle. Only other thing I can think to add is that the plug will break before the block, so use a long bar.

[fredrok]

50/50 Dexron or Mercon ATF and acetone. Better than any penetrant out there. Shake well before applying.

[javaman34]

PB blaster worked. One installed with anti-seize. Thanks everyone for the help. Will continue the adventure tomorrow.