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Post by scootermcwells on Jun 28, 2018 11:36:40 GMT -5
I had about 1/4 tank left and decided to fill up. Put in 1 gallon of unleaded and started her back up. The gas gauge went down to E and never moved during my 15 minute trip. Scooter ran the same, no leaks from what I can tell. What might be happening?
I should add that this is the first time I've filled up my tank, I'm a newbie, so this is mildly alarming... |
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Post by jackrides on Jun 28, 2018 13:05:13 GMT -5
Start with checking the connectors on the fuel gauge sensor on the tank.
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PirateLabs
Scoot Enthusiast
Posts: 296
Location: Bowling Green, KY
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Post by PirateLabs on Jun 28, 2018 13:30:39 GMT -5
If the connections are ok, inside your tank is the sending unit. It is not that hard to get to by unscrewing the ring where the wires enter the tank...that is...if you have a typical 49cc Chinese scooter. When I got mine, it was used and my gauge would only start to register when I hit some bumps and, after reading some posts on this forum, I found out how to fix it. When you pull out the sending unit you will see a float and a stiff metal rod attached to the float. Follow that rod to where it goes into the electronics part where there is simply a printed circuit board and the end part of that rod sweeps across that circuit board and varies the resistance to make the gauge read. Carefully, (no sparks) turn on your key and move it around some. What happens is it can be assembled either too tight and it will stick while reading, or too loose and the brush part will not be in contact with that circuit board and you get no reads, or sporadic readings like me. These is a metal cap that keeps that rod in place, you can loosen it by prying it off a little...be careful. Or, you can tighten it by squeezing it with some pliers but...do not go too much or you will have to pry off again to loosen it. Test it to make sure you have it set right by looking at your gauge while moving. If correct, install back into tank and you are done. There are some videos of this on Youtube as well. Or, for about $20 you can buy a new sending unit and install it, but, sometimes the new ones come set either too loose or too tight.
Bill
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Post by GrumpyUnk on Jun 29, 2018 11:30:57 GMT -5
To add just a bit. If your gauge is optimistic to the point it shows a 1/4 tank when empty, or the opposite, you can follow PirateLabs instructions, and additionally, bend the arm that the float uses up or down as needed. It won't be perfect, but you can make it so when fuel level is low, the gauge indicates low or empty. Better to have that, and who cares about showing 'FULL' when you know you just filled the tank. At least I'd want to know when it was empty(close) rather than being !surprise! no mo inna tank...
tom
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Post by greginisn on Jul 4, 2018 0:53:52 GMT -5
It is possible the resistance part could be cracked and now that you have a full tank of gas the wiper portion is above the crack and can't make a valid reading cuz there's no voltage available at that point. If after checking what the other guys said it starts reading after you have used some of your gas that would be a good clue. But watching the fuel gauge needle with the sending unit out of the tank and moving the float arm will quickly tell you what you need to know.
Greg
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