fuel gauge

[furryboy]

Hi all

I'm new to website but have owned my divvie for 5 years. its a 1995 with 18000 miles on the clock. My fuel gauge works ok when I'm riding but as soon as I stop and the engine is ticking over it drops to empty. As soon as the revs rise the gauge goes back up. The sender unit hasn't had the mod done on it but I'm not sure if it could be the voltage regulator with it rising and dropping with engine revs.
Any help would be gratefully received.

Cheers

[bobh]

The way things should work, once the revs drop below the point where the generator can balance the load, the battery should maintain the supply voltage to all the stuff that's connected. So unless you're having problems with the battery going flat or the headlamps fading out when the engine revs drop, I'd look elsewhere.

The question is - where? Any suggestions, folks? Anyone else had this problem?

For a start, does the gauge register when you first switch the ignition on (give it time to crawl up the dial)?

[Sean]

"they all do it"

I am pretty sure it sounds like the usual and well known worn out pivot pin on the sensor arm inside the tank - my Divy 900 1998 does the same and has done since I got it but never actioned the cure yet.

Reving the engine to about 7000 does make my gague go back up to full but I think it is simply the vibration wobbling the unit inside the tank.....there is a link somewhere on site for a cure for this...involves taking unit out and replacing the squared off pin...

[furryboy]

Hi the gauge only registers when the engine is revving. I think I will have to remove the fuel tank and modify the gauge

Good excuse to use the fuel in tank on a run

[johnthebowman]

Hi Furryboy and welcome to the site.

The fuel gauge has never worked on my 1994/5 D9. I understand they give up the ghost at about the mileage you have done especially on the earlier D9s like yours and mine.
I would get used to it not working and rely on the trip meter and the red low fuel warning light

The good news is your D9 will probably still be running at 118,000 miles. Mine is

[CD]

There are some instructions in the tech section for doing a repair that should last. But to be honest the fuel gauge is fairly useless anyway.
Up to 33% used - needle never moves
Middle 33% - needle falls like its broken
It already showing empty for the last 33% - when you really need it.
Never mind the low fuel light comes on with tank 1/4 full.

So however you cut it, the *reserve* is too big or you take a chance of running out.

Apart from that I'm happy with the bike.