First I love my Dyna Low Rider. The other day I took home a 2009 Road King from a friend who wanted to sell and I have a neighbor who was interested in buying. So, get the bike home and he test rides it and so does my son-in-law. We park it and when I get ready to ride to the store and put it away in the garage, it would not start. Tried everything. Kill Switch okay, gas in the tank, etc., etc. The motor would turn over and but no start. I took the air cleaner off and sprayed starter fluid in the throat and it started and died. I figured the fuel pump went south. I called my friend and he said no problem he would call the dealer to come and pick it up. Now what was the prognosis everyone wants to know and share with others. The bike is fuel injected. The gas cap gasket was bad. Dealer cleaned the fuel filter and put a new gasket or cap on and voila everything as it should be. So when our friends talk about bike not starting. Maybe its the gasket.