98 Dodge Dakota 4x4
98 Dodge Dakota 4x4 with 3.9. Truck originally quit on me so I put a new fuel pump on it once I done that it started up and ran 15 mins or so then died again I went inside for 20 mins came out started it up again and it backfired so hard it litterly blew my muffler off, now it will start sometimes but only run 10 mins or so before shutting off. I can smell fuel so I checked to see if it was getting fire and it's not. If anyone can help me out I'd greatly appreciate it. Also if anyone has a complete diagram of this trucks firing steps I might could track down the problem by using process of elimination. Thanks guys.