[taxman9]

Hello helpful humans -
My wife's explorer, which we had a new fuel pump put on about 6 months ago, was having a hesitation while in idle a couple of weeks ago. It would drop down to 500 rpm and sounded like it was about to die but then would go back to normal idle. Last week I tried to help a neighbor jump their car, which may be entirely unrelated, but since then its had major issues starting. First time it wouldn't start, it would turnover and crank hard but wouldn't pop and start. After 15 minutes of trying every minute or so it started. This has happened every time since and now can't get started at all. I will post a video soon.
Thinking fuel filter (which was said to be done with the pump)?
Starter?
Timing chain?
Spark plug/line?
Hopefully not the pump again!