Maybe a bit off topic as this is actually in an older Toyota Corolla, (87). Just picked it up a few weeks ago from a neighbor just to have around for an extra set of wheelsjust in case. Changed the AF and oil and filter. I was going to pull out a plug last night and it was very slow to turn but it was turning. However, then it felt like it wanted to start to freeze up and was feeling a bit "gritty" when I was starting to take it out. When it got to the point that I would have had to put some real weight behind it, I backed off as I was afraid of a crossthread or worse yet, turn the threads out with the plug.
So is there any tricks to try to see if I can get this with causing myself any grief and $$ woes? I need to try another plug to see if it acts the same way plus I need to run the engine to heat it up to expand the head to help with the process to. So those things I can still do, but I am looking for anyone who may have had this problem before and might have something they did that I can find out about....
tia

 

Yep, screw it back in and spray the plug hole with air to clean out any dirt. If you dont have a compressor, use a garden hose and put your thumb over the end to get that hard fast jet action going. Which ever method you use, cover your eyes. Let if dry, then srpay it with PB Blaster (found at your autoparts store). Then like any other rusted bolt, unscrew it some, screw it back in, srpay, unscrew it a little further this time and screw it back in, spray and reapt until it comes out. Takes time, however you can usually get a rusted up bolt off without damageing threads or breaking it off.

 

Maybe I need to qualify this is a Spark Plug. And real worried about the aluminum head getting messed up...

 

Yep, I got that part. Spark plug. What you have is rust in the threads. Plus spark plug holes are natorious for being collection areas for all sorts of engine grime, like grease, dirt, oil, and anything else that finds its way there. All that crap causes your threads to get full of crap. You need to clean the crap out for a couple reasons. So it don't end up in the engine when you do get the plug out, and so it doesn't gum up the threads.

I gave you two easy options to remove that crap, there are others. Pick your posion. Dont worry about getting water on your engine or in the spark plug holes. It is designed to handle it. Besides the spark plug is keeping everything out of the engine.Once you get the crud out of the way you need to provide lubrication in the threads. PB Blaster will soak into the threads and provide lubrication. It will help loosen up the rust in the threads. The more you work the plug in and out the more you use the threads and PB Blaster to clean up the engine threads.

Once you do get it out, put anti-sieze on the new plugs so you dont have this problem again.

 

^^^^^^^^^^^^^^^^^^^^^^^ Good advice ^^^^^^^^^^^^^^^^^^^^^^^^
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