I finally tackled a task I have been dreading for about a year......I changed my spark plugs!
I know, big deal right, well I thought it was going to be. I tried to change them last year, but I could not get them out. I have changed a lot of spark plugs in my time, and I have never had any give me so much resistance. And when I have had similar resistance on an import, it always ended badly for the treads.
It tried again a few months back before I put the engine back in after doing timing and seals. Again wy to much resistance for my comfort. So I just sprayed a bunch of PB Blaster in each hole and tried to loosen them a little so maybe some PB would get in there then retightened them.
The engine ran great after reinstalling it until just a couple weeks ago. It developed a stumble on acceleration and a miss at idle. I was hoping it was the TPS, so I tested it and it did not have a smooth ohm curve, so I changed it and that seemed to help some. So I decided to check the plugs again, still really resistive. So I thought, maybe they will come out easier hot. So I let the motor run for about 20 minutes, then checked, and while they were still harder than thy should be, they weren't as resistive as before.
So I went for it, and while I was still afraid there was a good possibility of this simple project going south, it didn't. They all came out hard, but the treads looked good. I tried to chase the treads but 13/16 socket that my tread chaser uses wouldn't fit in the spark plug hole, so I just lubed the new plugs with some PB and they threaded right in by hand most of the way.
Anyhow, like I said, should've been a simple and quick task, but it took almost an hour to complete this simple task, and I feel like I dodged a bullet!
Took it for drive afterwards, absolutely no stumble or miss. Actually spun the tires off the stop sign!