96 ranger 4 cyl ran fine till put ethonol gas in now won't run on 1996 Ford Ranger

sputters, backfires, doesn't die but won't accelerate. replaced fuel filter and put non ethanol gas in. no improvement

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2 answers
You need to check fuel pressure and volume with a fuel pressure gage. So what you are saying is that in the 16 years of service you never used regular unleaded fuel with 10% ethanol? You have a bad fuel pump. I suspect it is a volume problem.
Your saying, your truck ran fine till you pulled up to the pump, added how much and was it E-85?