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Dodgey fuel gauge

Dodgey fuel gauge

beaglebasher
5 years ago

Was out for a run last Sunday and the bike started coughing and farting.
Checked the fuel gauge and it was reading full so I thought "fuck! whats going on here?"
Luckily I wasn't too far from a servo and rolled down the hill and put in 18 litres so the fuel gauge is fucked.
How do you fix a fucked fuel gauge? Its stuck on FULL

Wideglider
5 years ago

Quoting beaglebasher on 01 Aug 2019 09:43 AM
Was out for a run last Sunday and the bike started coughing and farting.
Checked the fuel gauge and it was reading full so I thought "fuck! whats going on here?"
Luckily I wasn't too far from a servo and rolled down the hill and put in 18 litres so the fuel gauge is fucked.
How do you fix a fucked fuel gauge? Its stuck on FULL

Hey BB, what model bike are you running?
It may be that the sender (float) or wiring is the issue - not the actual gauge. Owners workshop manual will tell you what the set-up is for your bike including electrical resistance required in the circuit to gauge to provide an empty & full indication.
Surely you must have been wondering why your bike recently achieved magnificent fuel economy!?
I zero one of my trip meters each time I refuel, got a good feel now for how many km's before I may need to top up - I trust the odometer more than fuel gauge.

beaglebasher
5 years ago

its a 2002 fatboy. I forget if the gauge used to drop to empty when the ignition is off. Mine is stuck on full

STEAMER
5 years ago

Quoting beaglebasher on 01 Aug 2019 10:28 AM
its a 2002 fatboy. I forget if the gauge used to drop to empty when the ignition is off. Mine is stuck on full

Well 18.93 lt tank, so ya come close. I set my trip metre every fuel up. Then use that and guage

beaglebasher
5 years ago

Never thought to use the trip meter. I might start doing that until I get around to fixing it.
I was hoping somebody could point me in the right direction regarding gauge /float / sender / electics etc.

Wideglider
5 years ago

Quoting beaglebasher on 01 Aug 2019 10:28 AM
its a 2002 fatboy. I forget if the gauge used to drop to empty when the ignition is off. Mine is stuck on full

If you are saying that your gauge reads full with ignition off, then I would say it is the actual gauge that is at fault. Just to confirm that, disconnect all wires at gauge to see that it still reads full.

beaglebasher
5 years ago

That's what I was thinking Wideglider. How do you remove the fuel gauge to check the wires?
The gauge is the one on the left side of the fuel tank that looks like another fuel cap.

STEAMER
5 years ago

Quoting beaglebasher on 01 Aug 2019 10:28 AM
its a 2002 fatboy. I forget if the gauge used to drop to empty when the ignition is off. Mine is stuck on full

Quoting Wideglider on 02 Aug 2019 07:53 AMedited: 02 Aug 2019 07:54 AM
If you are saying that your gauge reads full with ignition off, then I would say it is the actual gauge that is at fault. Just to confirm that, disconnect all wires at gauge to see that it still reads full.

Should be able take the dash off tank, then just unplug the block, see what happens, on my 2011 fxst, there is a small plug which is for fuel gauge, and bigger block for rest of dash

Wideglider
5 years ago

I'm only going by the setup on my bike ('96WG), you should be able to disconnect at conector directly under the gauge under tank. Do you have an owners workshop/service manual?

beaglebasher
5 years ago

Yeah mate I do have the manual. I might even have a look at it !
Thanks boys.

steelo
5 years ago

Sorry to hear of your woes bb. Have you by any chance used e10 fuels?

Wideglider
5 years ago

Here is the connector on mine.

Baloffski
5 years ago

Aye wide just trying to interpret pic.
ahh upside down view?

beaglebasher
5 years ago

Just had a look at the fuel gauge. The wire was lying on the front cylinder rocker cover.
I cable tied it to the fuel line and it seems to be working fine now. I love that sort of shit.
I will be using the trip meter but. Thanks for the tip.

Wideglider
5 years ago

Yes wire shorting on engine/earth would do it, glad you found issue BB.
I don't see how gauge would have read full with ignition off though, were you sure of this?

beaglebasher
5 years ago

Not 100% mate. It was reading full when it ran out of fuel but. Will be going for a run tomorrow and will keep an eye on it and the trip meter.

Krash Kinkade
5 years ago

Quoting beaglebasher on 01 Aug 2019 09:43 AM
Was out for a run last Sunday and the bike started coughing and farting.
Checked the fuel gauge and it was reading full so I thought "fuck! whats going on here?"
Luckily I wasn't too far from a servo and rolled down the hill and put in 18 litres so the fuel gauge is fucked.
How do you fix a fucked fuel gauge? Its stuck on FULL

no fuel gauge here, I wait till I need reserve turned on. unless a long way between servo's.

Grease Monkey
5 years ago

Quoting beaglebasher on 01 Aug 2019 09:43 AM
Was out for a run last Sunday and the bike started coughing and farting.
Checked the fuel gauge and it was reading full so I thought "fuck! whats going on here?"
Luckily I wasn't too far from a servo and rolled down the hill and put in 18 litres so the fuel gauge is fucked.
How do you fix a fucked fuel gauge? Its stuck on FULL

Quoting Krash Kinkade on 03 Aug 2019 10:40 PM
no fuel gauge here, I wait till I need reserve turned on. unless a long way between servo's.

Forgot to turn mine back when I filled up once.....only once!

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