Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome to just answer and allowing me to assist you. After reading you problem it acts like it is a timing problem, there are a couple things that can cause this, fuel mixture and initial timing. Have you got any thing you can check the timing with? Also a vaccum gauge to check manifold vacuum?
where do you feel it backfiring? through the intake or exhaust?
thanx for that info and will help to narrow things down.do those checks and I'll be here to help you further.