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Old 05-28-2009, 10:46 PM   #1
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Genset not shutting off at 1/4 fuel tank ?

My 2008 Intrigue generator does not shut off when my fuel is below 1/4 of a tank. I am wondering if this a tank sensor or maybe a fuel gauge issue. Any help or thoughts about this would be helpful.
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Old 05-29-2009, 03:27 AM   #2
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I have noticed that on many of the diesel units that the generators will pick up fuel below 1/4 fuel level of the tank. I guess it it due to the amount of fuel still available. Have you tried running it until it does run out and see what level you are at? If not you will want to be close to a source for fuel and even have some on hand, just in case. I think that you will find that the pick up point is more like 1/8 fuel level.
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Old 05-29-2009, 09:16 AM   #3
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On many rigs it's not a sensor, it's not a gauge (though your issue could be) it's a 2nd fuel outlet pick up tube in the tank

One (the main engine outlet) is just off the bottom of the tank, the other outlet pick up tube is about 1/4 tank level, this feeds the generator

now: KEY WORD: ABOUT. Might be 1/8 or 3/8 tank, usually somewhere between those.

As for sensor/gauge: Fuel gauges are the least accurate guage made in most cases. it's possible that the generator runs out of fuel at 1/4 thank but the gauge says: Something else entirely
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Old 05-29-2009, 09:26 AM   #4
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I watched them make the fuel tanks and Elkhart, IN. The Gen-Set supply tube is in the top center of the tank. It goes down from the top and stops 1/4 of that dimension from the top. This leaves no way for a leak or anything to supply fuel after the level goes below this point. Due to this design it may produce fuel starvation to the Gen-Set while driving with more than 1/4 tank if you have uneven roads. I have a Monaco DP. Also on my indicating system, both the fuel level (Gage) and Low Fuel warning come from the same source. The Gage sends the signal to the light. There is NO separate warning!
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Old 05-30-2009, 11:48 PM   #5
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What I think is going on is that my fuel gauge is showing about 1/8 of a tank or so and at that low it becomes really to read. My tank holds 135 gallons and the Generator should shut of at about 20 gallons which is about that 1/8 of the tank and it has yet to shut off on its own. I think the gauge is probably not that accurate anyway. I am going to do a test and let it run down to almost empty and hope the generator shuts off, if it does the problem will explain it self. I will keep you informed.
Thanks for help.

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Old 05-31-2009, 09:01 AM   #6
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I do not have a CC I have a Monaco, but I think this will apply. The tank capacity advertised is for the total fuel capacity, it is the capacity of the tank by measuring the size of the container. This would mean that the number of gallons calculated to be in the tank at 1/8 reading could be off. Also the location of the sending unit could present additional problems, especially if you are parked (No Averaging).

That aside, you should be able to insure that the GenSet will run out of fuel by simply parking, or tilting the coach, wile in a low fuel state. This would help insure that you can make it to the next fuel stop without running the vehicle dry.
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