HELP! 97 Chrysler Cirrus - Flooding out

97 Chrysler Cirrus 2.5L V6 LX 130,000 miles. Car has been taken care of very well by one owner. Transmission replaced 2 yrs ago.
Problem with cold start, barely starts and sputters, but will not stay started. Floods out and gases out the plugs.
Can anyone give helpful advice, or faced same issue and what might be the problem? Was running fine 2 months ago, but then suddenly wouldn’t start one morning. First issue: Not firing. Neighbor mechanic replaced distributor, cap, rotor, and spark plugs. Then car started flooding and still wouldn’t start. So then replaced crank sensor, map sensor, and temp sensor. Fuel pressure then read 49 psi (normal). Code also determined O2 sensor, so replaced that as well. Ran fine for a couple of days, then started flooding and gassing out plugs again. Carried car down to local Dodge dealer for diagnostic and they had no answers either. No codes were thrown, checked timing and all OK. Replaced spark plugs again to Champion as recommended by dealer instead of Autolite. Still didn’t fix problem. Can anyone HELP! Now the TPS has been changed, map sensor, computer, new plugs again, and then again! Still gasses out the plugs and hardly runs, not drivable. any suggestions, any good chrysler mechanics?