Ok, so im having some trouble with my 1991 Xj40 VDP. Today, as i was driving down the road, i hit a hill and my car stopped. The car had slightly under a quarter tank of gas (It was in the red between a quarter and empty). shortly after i hit the hill my car quit on me( i think it stopped getting gas). it also would not start again, even with a charge box from the courtesy patrol wouldnt start it. We did put some gas in it with the gas can but, it was to no avail. Also, when we tried to jump it off with the chargebox, it always sparked, everytime we tried to connect it.

My question to you is this:
1.If My jaguar was on an incline with less than a quarter tank of gas, would it have issues getting gas through pump?

2.Is there a specific way to jump of a jag?

Thanks!