carbuerator back fire
 

Hi I'm new to this site and i'm getting good info, and i like it. My name is Wayne. I have a 2000 express conversion van 1500 5.7. My problem started by my van kept getting harder to start. Once started and run for awhile it was great, but after sitting awhile or over night same thing. But now it won't start at all. Turns over great but carbuerator is back firing. Fuel pump is priming. thought it might be electrical until that started happening to carb. I cleaned the cap and rotor too. Any help with this will be very appreciated. No engine light on. and i haven't been able to get any code reading yet Thanks again for any help. Wayne