Started the first leg of a three day trip down to Vidalia for the Rally today. Everything was fine leaving Kansas and entering into Oklahoma. Temps were around 80, I think. Rig was running like a champ. After 3 hours or so, I pulled into a gas station to look at my map for the next bit of driving, with the engine idling. After a few minutes, I put it in drive, and it sputtered and died. Engine was hot sitting there, about 215 degrees when I looked down at the gauge. It would not restart. I had to let it sit and cool down, and after maybe 10, 15 minutes, it fired right up.
It happened a second time shortly thereafter. I was going through rolling hills at 65 mph, and had to pull over to make a phone call. Whilst on the call, the engine got hot again. Maybe 220 degrees this time. When it was time to go, the engine sputtered, but I got rolling. I made it maybe 100 feet when it died again I had to wait a good 10 to 15 minutes before it would start again.
This never happened last year, when I drove in 90+ degree weather, driving for 3 hours. This year I have driven it five times on an hour and half drive in 80+ degree weather with no issues.
I got it rolling again and drove another 35 minutes to the camp ground. It died again when backing into the site.
Vapor Lock? Engine overheating?
Engine oil is fine. I'll check the radiator in the morning when it is good and cold. The overflow reservoir was up the hot operating line, so that looked fine.
Debating whether to continue to Vidalia, or head back home in the morning to be safe. Currently located near Shawnee, OK. Tomorrow's journey is supposed to be to Minden, LA.