So yesterday I was taking my bus to a friend's place out in the country as I left town I noticed I had ⅛ of a tank left of fuel, felt I could make it there and back, well halfway back she stalled out. Still a bit above the empty line, figured "eh, The gauge must be off, My bad." called up my friend told him the situation he brought me some diesel(in a gas Jerry Can, not sure if the residual gasoline could have contaminated the diesel and caused damage). After a lot of cranking she did start, she was idling lower(~590) than normal(~660) then would rev up(~710) by herself then back down. When in park or neutral I could rev her up normally, but in drive when I tried to go, she'd just stall.
Well we pulled her home with a tow strap I was told to check the oil because they "will not start or stay running if the engine oil is low because it uses oil pressure to operate the fuel injectors" despite a slow leak the oil level is where its supposed to be.
I tried to start her today for the most part she just cranks, AIC read ~150RPMs, but then she sounded like she was about to start, AIC read ~350RPMs but no matter how long I'd let her crank she wouldn't fully start.
Here's the video I took yesterday trying to get it to start. https://drive.google.com/file/d/112-...w?usp=drivesdk
A bit of background,
I took her to the shop after I bought her, I was told she needed glow plugs and a new glow plug relay(or glow plug controller). After sitting all winter, this past spring I tried to start her up, fuel gauge was at about where it was yesterday and after using a heat gun in the intake I got her started up, about 10 minutes afterwards she stalled just like she did yesterday, feeling defeated after that(thought something more serious was wrong) I left it for a few weeks tried again in warmer weather and put more fuel in, again after a lot of cranking she started up, drove and started no problem after that.
Any ideas on where to start diagnosing here?