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Ride cut short -- Fuel mystery
I had a 140 mile out-and-back planned for the day, since the 60°+ temps would be nice. My plan was cut short, however.
Went out to the Spyder and started it before putting my helmet on, as usual. The low fuel light was on and the gauge indicated empty, with 35 miles to empty displayed. Yesterday, I rode 130 miles on a full tank and it was half full when I pulled into the shop. Turned it off, put on my helmet and restarted -- low fuel light went out and the gauge indicated 1/8 of a tank, with 35 miles to empty.
Went to the nearest station and filled the tank with about 3.4 gallons, agreeing with yesterday's 130 miles. Gas gauge indicated full, with 258 miles to empty, so I left on my ride. 36 miles into the ride I looked down and the gauge indicated 3/4 of a tank. What the hell, thought I. I continued and at 39 miles I had half a tank -- maybe I left the gas cap off, so I stopped and checked and found it secure. I turned around, since the nearest fuel was back where I came from.
Riding 45 mph, I began my limp home. When I completed 72 miles the gauge jumped to 3/4 tank and 155 miles to empty, which is about right. Got to the station at 80 miles and put in 2 gallons of fuel. 45 mph produces 48 mpg!
The gauge (or sensor, or software) had apparently malfunctioned. Next time it happens I'll suspect the gauge first, but I'm going to make a dipstick for the fuel tank and keep it in my tool bundle. Fuel stations are too far apart in this part of the country to be unsure about remaining fuel.
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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2020 RT. It’s a warranty issue. Don’t settle for it or come up with yet another work-around, get it fixed.
Doug
2023 RT Limited, RT 622, BUDS/BUD2 Megatech/Megatronic
”Freedom is not a loophole”
F4 Customs SWCV, Ultimate, Lidlox, Adjustable Side Vents, Leather Like Grips, SS Grills, Centramatic, Garmin XT2, BajaRon Original Sway Bar w/ Lamonster links, P238
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Originally Posted by Snowbelt Spyder
2020 RT. It’s a warranty issue. Don’t settle for it or come up with yet another work-around, get it fixed.
If I can't duplicate the problem, it will be one of those "It seems to work fine now..." dealer responses that just waste everyone's time.
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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Ozzie Ozzie Ozzie
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You are relying on a mechanical device that is notoriously inaccurate ..... after 1000's of tanks of gas I know what my average fuel mileage is .... I ONLY fully fill my gas tank ( 14 RT ) ... and zero the " B " counter ..... from checking the " B " counter I pretty much know how far I can travel before I run out of gas ..... for my Toyota Sienna it;s much easier ..... If the LOW fuel light comes on I know I have 1.72 gal. of gas left and then drive accordingly ...... Mike
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Since its a post 2018 and it seems the fuel gauges have been pretty reliable since then I think its safe to say you have a problem that should be fixed and it should not show up again.
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Peter and BlueKnight911: The old trip odometer ('B', just like Mike) is such an ingrained habit I still use it for fuel to this day. This being the first time for this error (in 6000+ miles), I was smelling for fuel leaks and looking for soot in the pipe. Now I know better and will trust the odometer. It is reassuring to know it's a common failing. Thus far it's only fooled (and failed) me once...
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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ButterSmooth....Should you need to come my way for a shop repair, let me know. There a guest bedroom and bath and space in the garage.
Ours is a red, black and chrome 2017 F3 Limited. Bought new in 2/2019. The avatar is my first bike back in 1952, a Simplex Servi-Cycle. Photo taken at the Barber Museum.
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Originally Posted by RICZ
ButterSmooth....Should you need to come my way for a shop repair, let me know. There a guest bedroom and bath and space in the garage.
Thanks Ric. Only one data point on the problem so far. If I can't duplicate it, the dealer sure can't.
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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Don’t forget current fuel price issues & getting rid of winter “blend” mixture at pumps
first stretches after hibernation, stabilizer may have protected while sitting & just need good tank or two run through
2013 STL SE5 BLACK CURRANT
SpyderPop's: LED bumpskid
SmoothSpyder: dualmode back rest
T r * * LED:foam grip covers, Tricrings, FenderZ,
brake light strips, wide vue mirrors
Rivico SOMA modulation brake leds
sawblade mowhalk fender accents
minispyder dash toy
Lid lox
KradelLock
Pakitrack
GENSSI ELITE LED H4 headlights
FLO (Frunk Lid Organizer)
BRP fog lights, trailer hitch
SENA 20S EVO
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Originally Posted by Bfromla
Don’t forget current fuel price issues & getting rid of winter “blend” mixture at pumps
first stretches after hibernation, stabilizer may have protected while sitting & just need good tank or two run through
I've ridden my Spyder all Winter, so far, so there are no storage induced issues. I guess I can't see how changing fuel formulation would effect the fuel gauge. Especially when it self-recovers...
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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Originally Posted by ButterSmooth
I've ridden my Spyder all Winter, so far, so there are no storage induced issues. I guess I can't see how changing fuel formulation would effect the fuel gauge. Especially when it self-recovers...
Winter blend issues have to do with performance. In your case, the fuel gauge seems to be the culprit. Both my 2010 and 2011 RT's had wonky fuel gauges. Since then, issues seem to be quite rare. Both you and Peter have had some interesting issues. For yours, should be fixed under warranty.
Currently Owned: 2019 F3 Limited, 2020 F3 Limited: SOLD BOTH LIMITEDS in October of 2023.
Previously : 2008 GS-SM5 (silver), 2009 RS-SE5 (red), 2010 RT-S Premier Editon #474 (black) 2011 RT A&C SE5 (magnesium) 2014 RTS-SE6 (yellow)
MY FINAL TALLY: 7 Spyders, 15 years, 205,500 miles
IT HAS BEEN A LONG, WONDERFUL, AND FUN RIDE.
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Originally Posted by ButterSmooth
I've ridden my Spyder all Winter, so far, so there are no storage induced issues. I guess I can't see how changing fuel formulation would effect the fuel gauge. Especially when it self-recovers...
IF & when it recovers
Originally Posted by ARtraveler
Winter blend issues have to do with performance. In your case, the fuel gauge seems to be the culprit. Both my 2010 and 2011 RT's had wonky fuel gauges. Since then, issues seem to be quite rare. Both you and Peter have had some interesting issues. For yours, should be fixed under warranty.
hopefully is just a fixable sticky float, unfortunately what made it stick If not the additives.
2013 STL SE5 BLACK CURRANT
SpyderPop's: LED bumpskid
SmoothSpyder: dualmode back rest
T r * * LED:foam grip covers, Tricrings, FenderZ,
brake light strips, wide vue mirrors
Rivico SOMA modulation brake leds
sawblade mowhalk fender accents
minispyder dash toy
Lid lox
KradelLock
Pakitrack
GENSSI ELITE LED H4 headlights
FLO (Frunk Lid Organizer)
BRP fog lights, trailer hitch
SENA 20S EVO
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It did recover near the end of the shortened ride. It can't be a sticky float, because it started full and then dropped rapidly and linearly from there. The gauge reading dropped well below (1/2 tank) the fuel level before recovering, so it went down like a leaking float, but then it popped back up. Doesn't sound like a float problem to me --- I suspect something in the sensor reading algorithm needs to be made a little more robust. At least it doesn't go to full throttle like a Toyota...
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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Since the float changes a resistance value as it goes up and down it could be as simple as a loose connection. A loose or broken wire would mimic an empty fuel tank.
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Originally Posted by EdMat
Since the float changes a resistance value as it goes up and down it could be as simple as a loose connection. A loose or broken wire would mimic an empty fuel tank.
Well, I took a few minutes and looked at the manual. The fuel gauge is a 'stupid' gauge, while I expected a 'smart' Can-Bus sensor. The resistance goes up as the fuel goes down. You're probably right, a poor connection at one of the connectors. Those problems usually have one or more causes: loose connector contact springs (GM's specialty), dust in the connector pins, and in low current circuits 'dry' contacts (the less current flowing in the circuit, the more susceptible they are to contact problems). Cleaning, tightening, sealing and lubing the connectors is the cure for connectorosis. If it happens again, I'll be ready. As a note, these are the kind of problems a dealer tech can rarely fix.
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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Went for another ride today and at first turn on the fuel gauge indicated 1/2 tank on a known full tank. Miles-to-empty was 101. Started down the hill and the gauge s-l-o-w-l-y recovered to full. The miles-to-empty was whacky all day, but the gauge seemed to be ok. Called the dealer for an appointment and his first opening is 22 days out. At least it's rideable until then. The slow recovery of the gauge is interesting...
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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The RT spent Saturday at the dealers. It took the better part of a month to get the appointment. The service department was very cooperative and found the sender to be failing. They were kind enough to put things back together so I can ride while we wait for parts. Hope that's the fix!
Head in the game, eyes down the road... 2020RT
Spyder Tryke Pylot
2020 RT , Lamonster extender Petrol
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