I have a 2006 JC limited 4.7. The jeep overheated because of a radiator leak. I replaced the entire cooling system. Then, discovered a cylinder head gasket leak due to the overheat. The engine still started and would run somewhat normal as I could still drive it to the machine shop and for emergency only until I could afford the head work. Now, the Battery and starter both had to be replaced, as well as the coolant hoses that tee off of the firewall. Now, it won't start at all. It gets fuel. I even replaced the crank position sensor by recommendation of a Chrysler mechanic. Still, nothing. I replaced the spark plugs and used the NGKs gasped at .44. I'm getting really frustrated now. I've taken really good care of this vehicle since 2009, and have never had a problem until now. Any suggestions are welcome with open arms.