Engine stalled on incline

[kcjaz]

So I was parked in my driveway with engine running (backed in so front pointed down hill) testing my weboost and messing with head unit, when the engine stalled. I knew I was low on gas but had just hit the “range 0 miles” which usually means I have 4 gal left. I put it in neutral rolled down my driveway and got it started. I threw a gas can in the back of the truck and went to the gas station. It took 19 gallons which means I had like 5 gallons left. Other than the incline I have no idea why it stalled. doesn’t seem to be anything else wrong and it’s not running funny. Does it make sense that the steep incline with engine down could starve the fuel pump? I know at some point this could happen I’m just surprised it did it with 5 gallons in the tank.

 

[tbisaacs]

If I recall the pickup sits in a bowl in the tank so it would make sense that if you were on an incline the pickup can’t get to the fuel.

 

[kcjaz]

If I recall the pickup sits in a bowl in the tank so it would make sense that if you were on an incline the pickup can’t get to the fuel.

Yes, I’m just dismayed it happened with 5 gal left.

 

[bloc]

The fuel pump module is biased toward the rear of the tank, I believe not only for packaging but also the functional advantage of keeping the pickup submerged while climbing. Sortof like why the oil pickup in the sump of engines installed in most 4wd vehicles are toward the rear. With it so far back I could imagine 5 gallons being isolated to the front of the tank and the pump bucket eventually losing enough fuel to keep it running, assuming it's a significant incline.

It probably didn't stall immediately right? After a while? As in after enough time that the pump bucket could have drained down?

 

[kcjaz]

The fuel pump module is biased toward the rear of the tank, I believe not only for packaging but also the functional advantage of keeping the pickup submerged while climbing. Sortof like why the oil pickup in the sump of engines installed in most 4wd vehicles are toward the rear. With it so far back I could imagine 5 gallons being isolated to the front of the tank and the pump bucket eventually losing enough fuel to keep it running, assuming it's a significant incline.

It probably didn't stall immediately right? After a while? As in after enough time that the pump bucket could have drained down?

Oh yeah, I was idling for a good 30 min. Then I notice a little vibration/rough engine, then she died.