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 Erratic fuel gauge

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Foxy
Scooter Rider
Scooter Rider
Foxy

Number of posts : 53
Location : Croydon, UK
Points : 962
Registration date : 2018-06-23

Erratic fuel gauge  Empty
PostSubject: Erratic fuel gauge    Erratic fuel gauge  I_icon_minitimeMon Jul 02, 2018 6:14 am

Okay, here's the thing. I am a new to Silverwings virgin and when I got the bike last weekend, the fuel gauge was flashing just one digit at the bottom. So off I go to the local rip off garage and fill the tank. Surprised to only get about £12 worth of the good stuff in, after which a mate tells me he can get about £16.00 from empty.
Gauge showed full for the return trip to the garage.
Rode the bike the other night, only about 50 miles, but during that time, the gauge was again flashing just one digit, although it did show full for a bit of the journey.

I am assuming that it is the sender unit inside the tank that is playing up, unless someone can tell me otherwise?
Next question is, how do I get to access the tank and whatever may be playing up?
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Cosmic_Jumper
Site Admin
Cosmic_Jumper

Number of posts : 3594
Age : 77
Location : damn near Philadelphia, PA
Points : 8354
Registration date : 2009-06-12

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PostSubject: Re: Erratic fuel gauge    Erratic fuel gauge  I_icon_minitimeMon Jul 02, 2018 7:11 am

If, IF, you were on this side of the pond I'd suggest that you do multiple half-bottle Chevron Techron treatments to the next several tanksfull of fuel. More than likely the fuel sending unit has varnish deposits which are causing the erratic fuel gauge condition.

Use the blue tab Search function, above, to find what others have posted regarding fuel gauge issues.

Best to review the fuel tank removing procedure in the FSM. You do have the FSM, don't you?

Tim
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The Bern
Silver Wing Expert
Silver Wing Expert
The Bern

Number of posts : 899
Location : Telford, UK
Points : 3185
Registration date : 2014-11-20

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PostSubject: Re: Erratic fuel gauge    Erratic fuel gauge  I_icon_minitimeMon Jul 02, 2018 7:24 am

Yep it's in the tank, the 'fun' bit's..........

Remove saddle
Remove sparkplug cover
Remove floor mats
Remove lower skirts
Remove passenger footpeg mounting plates
Remove central floorboard section

If it's been standing for some time with little fuel in, the sender might have become 'sticky', might be worth running some fuel addative for a few tanks, see if it frees off.

Typed that ^^ while Tim was also typing, concensus is much the same Smile IIRC there is a Redex product that cleans gum from injectors, that or something similar might help


Last edited by The Bern on Mon Jul 02, 2018 7:32 am; edited 1 time in total
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The Bern
Silver Wing Expert
Silver Wing Expert
The Bern

Number of posts : 899
Location : Telford, UK
Points : 3185
Registration date : 2014-11-20

Erratic fuel gauge  Empty
PostSubject: Re: Erratic fuel gauge    Erratic fuel gauge  I_icon_minitimeMon Jul 02, 2018 7:30 am

Ohhh as reccomended by Tim (&similar price to Redex), Techron is over here as well bud ............

https://www.ebay.co.uk/itm/NEW-Techron-PEA-Concentrate-Plus-Petrol-Fuel-Injector-System-Cleaner-350ml-/273243314715?_trksid=p2385738.m4383.l4275.c10
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Foxy
Scooter Rider
Scooter Rider
Foxy

Number of posts : 53
Location : Croydon, UK
Points : 962
Registration date : 2018-06-23

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PostSubject: Re: Erratic fuel gauge    Erratic fuel gauge  I_icon_minitimeMon Jul 02, 2018 10:32 am

Thanks guys, sounds highly likely that it is varnished up, since it seems intermittent. I will certainly give it a try with additive, since I have some good stuff that has worked successfully for me before, Forté which I pretty much swear by.

Highly likely that the bike has been standing for a good while, as the PO was a bit of a wheeler dealer and has a good few bikes.

I don't have a FSM as yet Tim, having only just got the scoot and not 100% sure I will be keeping it yet, I am not going to spend too much on her, until I am sure. I have shelves full of Honda, Clymer and Haynes manuals, but not one for an Swing..... yet.

Cheers for the advise lads. thumbs up thumbs up
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Cosmic_Jumper
Site Admin
Cosmic_Jumper

Number of posts : 3594
Age : 77
Location : damn near Philadelphia, PA
Points : 8354
Registration date : 2009-06-12

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PostSubject: Re: Erratic fuel gauge    Erratic fuel gauge  I_icon_minitimeMon Jul 02, 2018 1:23 pm

Rumor has it there is a FJS600 FSM online. But you'll need to search
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RazorbackUofA
Scooter Rider
Scooter Rider
RazorbackUofA

Number of posts : 85
Age : 64
Location : Arkansas
Points : 1445
Registration date : 2017-04-23

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PostSubject: Re: Erratic fuel gauge    Erratic fuel gauge  I_icon_minitimeTue Aug 28, 2018 6:21 pm

i replaced head light bulbs and in doing so had to unplug the dash.. fuel gage had not worked for weeks maybe months while the plastic and dash was out i cleaned put dialectic paste in all connectors ... gauge has worked from then on.
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