that is ot how you test for a cooling fan problem and you should take it to your mechanic so you dont chop off any fingers. Those fans are on a special switch that comes on when the engine reaches a specific temprature. Paul, 38 years ago there was only one fan. Now, a lot of cars actually have two fans.
2) Propane contains an odorant similar to what's put into natural gas. If combustion is not complete, or there are any leaks, then this odorant produces a smell. In addition, in larger tanks typically there is a large tablet of solid odorant sitting in the bottom of the tank.
So now I have the complete set of new burner and tank working, but my old burner is still sitting there. I guess I can go and fill the old tank for that. I think it makes a lot of sense that the propane gas is a mix of propane and butane. In the last 20 years, the propane must had escape leaving the butane. That could be the reason why I got flame but it was very weak before.