Iam a mechanic by no means but yesterday my 98 Kia Sportage began sputtering and shaking. When I finally pulled over it had gotten to the point to where the engine sounded like a lawnmower or even a small motorcycle. When I restarted it and gave it some gas it was backfiring through the engine blowing this rubber cap off emitting a small flame. It wont even turn over now just gives a small grind when you turn the key. A cpl ppl I have spoken to said that it seems like its the fuel pump. Any help would be greatly appreciated and or suggestions as to what it may be. As of right now Iam thinking its the fuel pump.