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How does your fuel gauge work???

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    How does your fuel gauge work???

    Does anyone else have an inaccurate fuel gauge? Mine seems to work just fine when the bike is parked and not running, but turn it on and it drops to half the correct amount. I thought it was the fuel level sender until I changed the tank with an almost new one and had the same results.
    Currently bikeless
    '81 GS 1100EX - "Peace, by superior fire power."
    '06 FZ1000 - "What we are dealing with here, is a COMPLETE lack of respect for the law."

    I ride, therefore I am.... constantly buying new tires.

    "Tell me what kind of an accident you are going to have, and I will tell you which helmet to wear." - Harry Hurt

    #2
    The fuel sender is just a variable resistor. You may have something in the circuit that is adding resistance in series with it, thus causing the false reading. Check the wires going to tank to make sure you have good clean connections. You most likely will have connections close to the tank and also close to the indicator on the dash.

    Terry

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      #3
      Mine is useless. The needle moves arounbd a bit is about all it is good for. It never was accurate.

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        #4
        It's a gas....

        Mine doesn't do a thing but sit on "empty" when it's shut down...The problem I don't like is that it goes down to "E" when I know, perfectly well, that there's still a couple of gallons of gas left in the tank...I'm having problems fitting a Pingel right now and was hoping to have a "reserve"...I'll let everybody now how it works out. One thing I know for sure is that you can take the sending unit out and bend it so that it registers however you'd like it to...just remember when "empty" really means "empty". :roll: :roll: :roll:
        1980 GS1100E....Number 15!

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          #5
          mines useless as well.....oops just figured out why. NO gas.... damn those carbs!!!!

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            #6
            whats a fuel gauge?

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              #7
              mine works good, full is full, and empty is empty, there is some variance in between, sometimes it will hit reserve at 1/4, some times at 1/8.

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                #8
                It doesn't

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                  #9
                  Re: How does your fuel gauge work???

                  Originally posted by Jethro
                  Does anyone else have an inaccurate fuel gauge? Mine seems to work just fine when the bike is parked and not running, but turn it on and it drops to half the correct amount. I thought it was the fuel level sender until I changed the tank with an almost new one and had the same results.
                  Inside the guage housing there is a little resistor that brings the effective voltage to the guage back to about 5 volts. This is so the guage shows the same fual level when the battery is down on charge.

                  It sounds like that resistor might be on the way out, or already gone. The same resistor also works in the oil temp guage on certain models. If you have an oil temp guage and it is also playing up, then you probably have your answer.

                  Other possibilities are the old Suzuki Scourge - dirty connectors. Check 'em again, and again, and..... :-)

                  Kim

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                    #10
                    On my S, the fuel guage is pretty accurate. The clock works perfect, now the oil temp guage......has never worked.
                    I think when the oil cooler was plumbed in it went away......


                    Keith
                    Keith
                    -------------------------------------------
                    1980 GS1000S, blue and white
                    2015Triumph Trophy SE

                    Ever notice you never see a motorcycle parked in front of a psychiatrist office?

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                      #11
                      mine works great, remove cap, move bike side to side listening for gushing sounds. Hasn't failed me yet.

                      Dave W

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                        #12
                        mine works great...

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                          #13
                          my gauge in my E model worked good, but the ES is awful. it shoots up to full when the tank is almost empty then as i ride it slowly comes back down........................... or not..............However I do have my gas mileage figured out . Broken right wrist 42 mpg .healthy right wrist 18 to 42 mpg

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                            #14
                            Originally posted by rick romero
                            whats a fuel gauge?
                            Dude it's the thing that sits in my Tach housing. You seen it before! And the only gauge I trust is my trip meter!

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                              #15
                              When my tripmeter hits 175km, start looking for a gas station. Too easy. 8)
                              Kevin
                              E-Bay: gsmcyclenut
                              "Communism doesn't work because people like to own stuff." Frank Zappa

                              1978 GS750(x2 "projects"), 1983 GS1100ED (slowly becoming a parts bike), 1982 GS1100EZ,
                              Now joined the 21st century, 2013 Yamaha XTZ1200 Super Tenere.

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