2002 Ram 4.7L V8 Hard Start. HELP??
 

I have an 02 Ram 1500 4.7L V8 that turns over for an extended amount of time before starting. Once the truck starts it runs fine but smells of gas for a few seconds. It doesnt start hard everytime. Mostly happens after it sits for 20-30 minutes. I have close to 100 hours into it, many parts and $$$, Im at a dead end with this truck. Can anyone help me? ? ? ?