Water in Fuel Corroded sending unit
 

I can only imagine that I got a bad fill up but this year my sending unit was inoperative and corroded. Used Diesel 911 to try to disperse water. Any other thoughts from members that may help?
I am also experiencing a miss at idle but only after car has warmed up fully. Someone told me that with 90,000 miles my Injectors may need to be rebuilt/ replaced. I did a diesel purge and car ran well for a few days then back to a slight miss at idle. Took a 120 mile trip and the miss was more pronounced than ever before.
Thanks for all the past help and look forward to the feedback.