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01-25-2017, 03:37 PM | #1 |
Join Date: Jun 2015
Posts: 19
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RX3 Fuel Float
I've got 3 RX3's, and both register empty.
The fuel level sending units were pulled and plugged back into the harness, and raising the float arm registers fuel level. Put them back in, filled up the tanks...and a flashlight shows neither float rises with the fuel level. We can raise the lever with a coathanger and the fuel level rises on the gauge. WTF? We took the fuel sender unit out to see if somehow the float itself has been compromised and it's not. There seems to be resistance in how the arm swings. We cleaned the pivot and put it in a bucket of water (different density than gasoline, heavier) Reinstalled, it still doesn't rise properly, but at least registers: one bar with a full tank, but still not floating to the top. Shaking the tank, sloshing fuel around shows some gauge response and then returned to no bars. Any thoughts? Am I looking at a new sending unit? Last edited by Caribbean Rider; 01-29-2017 at 01:01 PM. |
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01-26-2017, 12:50 PM | #2 |
Join Date: Sep 2015
Location: Neuquén, Argentina
Posts: 128
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Fuel gauge adjustment
A guy made this step by step procedure to adjust the RX3´s fuel level sensor.
It´s in spanish, but there are plenty of pictures that maybe will help you: https://coltermoto.wordpress.com/tri...ible-flotante/ From my point of view it is useful for the "zero" adjustment (let´s say: "E" light blinking exactly when there is time to switch the fuel valve to the Reserve position), but isn´t enough for the "full span" adjustment also required: after that my fueld gauge is perfect for Empty, but indicates "Full" at 50% of fuel.
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______________ - ex Honda MB100 (1981) - ex Honda Nighthawk 250 (1991) - ex Honda Storm 125 (2009) - ex Corven Triax 250 Touring (2016) (Zongshen RX3 carb) Benelli TRK 502 (2018) |
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01-29-2017, 01:01 PM | #3 | |
Join Date: Jun 2015
Posts: 19
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01-29-2017, 01:19 PM | #4 |
Join Date: Jun 2015
Posts: 19
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I am wondering if my tech re-installed the fuel sender correctly.
The basics: which direction does the float go? Forward or backwards? |
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01-30-2017, 06:40 PM | #5 |
Join Date: Jun 2015
Posts: 19
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Since I have new units on order, for spits and grins we took off the float on one and pushed on two wine corks.
Worked perfectly. Gauge works fine. We broke the float in two and discovered it was completely saturated with fuel. We have no idea how that happened. The float was the problem, most likely on the other RX3 also. |
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01-30-2017, 08:48 PM | #6 | |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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