when i turn my propane heater on, the air blows, but the pilot light doesn't go on. what do you think is wrong or where should i light the pilot?
you should be hearing a 'tick-tick-tick...' after you turn up the thermostat. This is is the piezo igniter which gets the flame going. My unit had the same symptoms as yours a while back. I removed the furnace and replaced the system board, (the printed circuit board with all the little electronic components). I had a local RV outfit test the board with their equipment. Cost me about $100.
The newer board will now start the ignition after about 15 to 20sec of fan blowing, a little different sequence than the original.
Do a search on this site for "furnace" and you will see previous posts about this.