I think your issues are someplace else other than the heat valve.
Lee.
Yes, now it doesn't run at all so you need to look somewhere else.
So, it was running (albeit poorly) before you checked the plugs. Now, it doesn't run at all. Could you have mixed up the plug wires?
If you are 500 miles from home without your tools, you will probably have to get help. Tow it to a garage or get mobile mechanic.
