Low fuel on hill no start - JeepForum.com
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post #1 of 4 Old 04-15-2019, 03:40 PM Thread Starter
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Low fuel on hill no start

I parked on a slight hill yesterday with the nose down and drivers side leaning down sideways. My fuel light was on before i parked. Figured i would get gas today. Well went to start and no go. Tried several times before i added about a gallon then it started. Filled up and took 16 gallons so i had about 3 gallons in it when it didnt start. Now i thought that with a pressurized fuel system, that it would suck up every drop of fuel. I wouldnt have thought i would have this problem with 3 gallons still in the tank. Its a 4.0 I6, fuel pump's about 2yrd old. I would estimate a hill with about a 20% grade.

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post #2 of 4 Old 04-15-2019, 04:01 PM
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2014 JK Wrangler 
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its not a pressurized system. If anything neg pressure.

As you corrected condition with adding fuel self explanatory what why.

CW* You should NEVER see the low fuel light - this is an example of WHY.

* or old fart thinking what ever you want to call it, 1/4 tank is time to add,

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #3 of 4 Old 04-15-2019, 04:18 PM Thread Starter
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Thanks for clarifying. Always thought it was pressurized.
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post #4 of 4 Old 04-15-2019, 08:46 PM
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The fuel gets sucked up by the pump, near the center of the tank. The system is only pressurized from there to the engine. Lose fuel at the pump and a fuel injected engine will stop running nearly instantly. There is a baffle in the tank that keeps fuel near the pump as the fuel splashes around during driving, but in your situation it had time to drain the fuel off to the corner of the tank. Dry pump, no go.
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