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Old 02-16-2019, 06:40 AM   #1
Baldicon
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Auxiliary Fuel Tank Pump Control

I will be installing an ATI 46 gallon auxiliary tank (already ordered), and was planning on using an in-line fuel filter/solenoid/pump configuration rather than just gravity feed. But it just came to me that I will not have any way of knowing when the fuel supply to the pump will stop due to the tank being empty.And if the pump keeps running with no fuel, I assume it will burn the pump up.Does anyone out there with a similar pumped system have a method to cutout the pump (and solenoid) when the tank is empty?I didn’t want to mount an extra gauge plus wiring in the cab.I will be using one of the up-fitter switches to control the solenoid/pump. Is there an in-line float switch that I could install ahead of the solenoid/pump?Any other ideas?

Thanks in advance
 
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Old 02-16-2019, 05:35 PM   #2
RV6A
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I think you're trying to make simple complicated. The gravity feed works wonders. I have not put fuel in my main tank in many years as I let gravity do the work.
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Old 02-16-2019, 05:42 PM   #3
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I prefer the gravity feed. Had it on two trucks and never a problem. I have known those that had the pump go bad. When that goes wrong you cannot pump fuel into your main tank.
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Old 02-16-2019, 06:34 PM   #4
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Originally Posted by Mudchief View Post
I prefer the gravity feed. Had it on two trucks and never a problem. I have known those that had the pump go bad. When that goes wrong you cannot pump fuel into your main tank.
Actually was going to add a bypass valve around the solenoid and pump just in case.
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Old 02-16-2019, 06:38 PM   #5
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I think you're trying to make simple complicated. The gravity feed works wonders. I have not put fuel in my main tank in many years as I let gravity do the work.
I do have a tendency to do that sometimes. Do you have a fuel filter between the aux and main? I had read that when the tank level drops that the restriction from the fuel filter can stop or drastically reduce the flow. Do you leave your manual valve open all of the time?
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