MUDN4R

I have a spark plug in the number six cylinder is STUCK!!!!... i can loosen it about a quarter turn then it gets stuck but i can still tighten it back up and im afraid to turn it anymore without effin something something up! ive sprayed pb blaster on it to try and loosen it with no luck! what should i do the spark plug has been in there for awhile and found this out the other day while changing the others..

tc

At this point you gotta get it out.

How stuck does it get?

The tap you'll need to chase the boogered threads is a 18mm I think...

black diamond

get the engine up to temp, and then try again, be patient, could save u big $$$$..

CJM

Metal expands with heat, could jsut ue a torch on it or turn the truck over.. Also get an r134a kit, and when ya heat the metal, immediatly cool the plug off with the r134..

This way block expands and plug shrinks.

MUDN4R

yeah but if i tap it how do i get it in there still its far in the back and even getting the socket in there is tough and what about the chips ill have to letting in warm up then trying it.. how long every it heats up should i let it run?

MUDN4R

it feels like if i push it anymore ill mess the threads all up and i dont wanna be replacing a head cause of one spark plug

Ringmaster

14MM not an 18MM.

18MM is for the old old old Ford style plugs, circa 1960.

reggie 00

Necessity breeds innovation,

Try disconnecting the motors mount jacking that side of the motor up, come in from the wheel well, get it started and use a socket instead of the normal tap bar.

coat the tap in grease.

Use a shop vac and air to vacuum em out.

I had to do this on a Honda once. I left the spark plug out and just turned over the motor and blew all the gunk out. motor ran fine forever till wife broke the timing belt.

tc

I'm pretty sure 22RE is 14mm and 3VZE is 18mm, but could be mistaken.


Yep - I don't think you'll have to go to extreme measures - you're probably going to just be chasing the threads, not totally cutting new ones.

The grease thing works REALLY well. Do a couple turns, then back off, then go in a couple more and back off a couple. When you get in a ways, back it completely out, clean the chips off the tap and regrease, then do the rest.

Victor

Have you tried penetrating oil? You probably have a galvanic reaction between the steel sparkplug and aluminum head. I have the opposite problem - #6 plug used to loosen and fall out on its own. You think the 3.0 has no power? Try it with only five cylinders! I have loctite on that one now so that it stops spitting it out.

ozzydg55

Did you ever get that spark plug out if so how did you do it????

nv4runner

I had one that didn't want to come out on my 3.0 when I changed them. I just worked it back and fourth. Loosen it as much as you think you safely can and then tighten it until it turns easy and then go back to loosening. Took a little while but it eventually came out and then I chased the threads. I'm pretty sure it was 14mm. Slow and easy wins the race.

MUDN4R

I havent tired at it yet we are very busy at work and i have no time to do it just yet just trying to fiqure out what to do

ovrrdrive

There's probably just a bit of carbon on the very tip of the plug that's binding it up when it hits the threads. Either that or it was cross threaded when it was installed. Either way just use a good 6 point spark plug socket and a little elbow grease. Don't be afraid to show it who's the boss. At this point you're not going to hurt anything at all by forcing it out.