The weather improved a little and I eventually worked up the nerve to chase those plug threads, and while I can’t say that it was a resounding success I can say that I was able to get the plug screwed in satisfactorily.
When I tried the ignition the car did start momentarily before it stalled out. So basically I’m back to where I started a few weeks ago. There are quite a few things that could be wrong here. I’ve covered spark, so I decided to move on to air. That meant making sure the MAF was still working, so I hooked up my multimeter.
I verified voltage on both the power and signal lines, and they were good. Next I tested resistance across the sensor saw numbers that were within the limits as shown in my manual for an LH-2.4*. There may be some air leaks messing up the calculations, but I haven’t noticed any yet.
This leaves fuel. I think my next step will be to take the throttle body off and clean it up.
* 2.5-4.0 ohms