A brief bit of backstory before I get to the issue. I work at a quarry where a 1969 IH D1500 was still in use as a crane truck until last year. My brother fired it up, drove it around for a little, and then left it idling while he did something else. After a little bit it idled down to nothing and wouldn't start again. It was dragged out of the way and has sat till now. I need it to move scrap so I'll be resurrecting it soon. It might be low on gas but if it isn't, do y'all have any thoughts? I has a 304 and a manual tranny, though I don't know what type it is.