I have a 2002 Jeep Grand Cherokee limited with a 4.7 L, 70,000 miles on it. It has been hard starting after it sits for 1 to 8 hours. I have to stay on the key for about 5 seconds or push the accelerator pedal to the bottom to start in about 3 seconds. If I try to start it after half an hour or leave the car overnight, it starts fine however, in every start, it always smells raw gas. I put new plugs, fuel pump, fuel filter, battery and still have the problem. Any help will be greatly appreciated. Thanks!