Fuel pump precautions - Page 2 - Kia Forum
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post #11 of 15 (permalink) Old 04-17-2019, 12:30 PM
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The electric fuel pumps located in the gas tank are cooled by the fuel in the tank.
Yes it is true that the pump can overheat and seize if uncovered enough.
Even though you may have a gallon or two left, it may not be touching the pump.
Modern blow molded plastic gas tanks are very contorted to fit into and around tight spaces.
I'm a child of the oil embargo years (70's) and rarely let my tank get below half.....need to
be on top of the Zombie Apocalypse you know!

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post #12 of 15 (permalink) Old 04-17-2019, 01:03 PM
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For the pump to overheat due to low fuel, you would have to run it way down (like past zero on your "miles remaining" gauge) and then keep it there for months by putting in a quart of fuel when you go to fill up every time. Nobody does that, which is partly why this design came about. An unexposed fuel pump that, for 99% of the time you drive it, is being cooled by sitting in a pool of fuel will typically last longer than an exposed pump that requires a separate cooling component.. and it's cheaper to manufacture, so it helps keep the overall price low. Kia isn't the only one who does this.

I regularly run my tank down to near empty.. I've done this on many cars I've owned and never had to replace a fuel pump.
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post #13 of 15 (permalink) Old 04-17-2019, 01:34 PM
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I know I have a different car, but when mine says it’s dead empty, there still seems to be about 10L left in the tank (fill from “dead empty” is about 53L but listed tank size in the manual is 62L). Is it common to have such a large “reserve” amount left in the tank or is my gauge miscalibrated?
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post #14 of 15 (permalink) Old 04-17-2019, 08:45 PM
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It is normal because people are dumb. So the manufacturers give people an “empty” indicator when they still can do something about it instead of at a true empty when dummies would end up stranded.
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post #15 of 15 (permalink) Old 04-18-2019, 05:12 PM
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Quote:
Originally Posted by Lou O. View Post
I'm a child of the oil embargo years (70's) and rarely let my tank get below half.....need to
be on top of the Zombie Apocalypse you know!
I remember leaving my car parked overnight at the gas station, getting up early to go be with it, to get my allotted 8 gallons of gas on my allotted day. I too have become paranoid about anything less than 1/2 a tank because of it.
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