Good point, and it has me a bit mystified. On Saturday we drove, now that I make better accounting of it, about 100 miles, during which I think we stopped three times. Each of those 3 times when I started the engine, I noticed that it turned over less vigorously than usual, and progressively worse, before it ignited (but everything else seemed normal). Then it was parked in my driveway for an hour or so. Next I used the car to fill my diesel fuel cans at a gas station about 3/4 mile away. But I also kept having to restart, because the one gas station pump didn’t work, and then because I had to reposition to get the hose to reach. The more sluggish cranking got worse and worse. I brought the fuel home and transferred it and then made a second trip to the gas station, and it was on this second trip that the starter wouldn’t turn the engine and the starter solenoid fluttered, so I rolled down the hill to start, and kept the engine running at the gas station, and came home again. So at that point I’m figuring there’s no way it would start, because it couldn’t turn the engine and then I only drove 1.5 miles. It sat all day Sunday, and this morning I arranged a local shop to come get it.
But once the pickup was arranged, just out of curiosity, I tried starting again. And it started. Three times in a row. I don’t think it spun the engine quite as vigorously as I’m used to, but it didn’t struggle. So now I don’t know what to think.