Q: Car does not start

I had to replace all of the fuel system in vehical from top of tank through and including the fuel pump, filter, lines. Had this done professionally by certified mechanic. Since this when ever it rains badly, I seem to have issues in the morning starting my Bravada. It acts like water in tank. So, I put thermal aid in and wait and it usually works, but not this time.I have been having issues with water getting into my gas tank. Not sure if this is happening at the gas station or some other way. Car was acting up and I put thermal aid in it to get it started. Car was making clunking noises and when key was off it continued to act like it was trying to start but would not and smoked a little. I kept trying to start it ever so often after putting in the thermal aid but no luck. It backfired a couple of times and now it cranks over but not start. I ran battery down from trying it and used a electronic starter to start it but will not start. Any ideas

My car has 189000 miles.
My car has an automatic transmission.