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Low Fuel Level Indicator Adjustment

Discussion in 'V7/V85/V9 Chat & Tech' started by pokeyjoe, Apr 6, 2013.

  1. pokeyjoe

    pokeyjoe High Miler

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    OK, I wasn't done and I did what I suggested above:

    [​IMG]


    The sensor is tucked under the fuel filter. This keeps me from hitting it when I install the pump (important). When my light comes on now, I can get 4.7 gallons in the tank. I'm not sure what my "reserve" is at that point, but I do know its time to buy gas. Yeah...I'm done.
     
  2. Kev M

    Kev M Cruisin' Guzzisti

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    Well done, thanks for pioneering, reporting, and including pics.

    One question, any idea what the purpose of that rod was? Physical location of the sensor insome way?
     
  3. pokeyjoe

    pokeyjoe High Miler

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    There was nothing to mount the sensor to in its original position. The rod allowed MG to put the sensor above the limited area available.
     
  4. rbm

    rbm Cruisin' Guzzisti

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    Pokeyjoe,

    Are your experiences with repositioning the fuel level sensor directly applicable to the older 2011 V7R with the original plastic tank? The fuel pump location is different with this tank than with the revised tank that you have, as you pointed out in the first post.
     
  5. pokeyjoe

    pokeyjoe High Miler

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    I don't think so. I used to have a couple pictures of the older fuel pump assemblies, but I can't find them now. As I recall, though, the arrangement of the pump and sensor looked almost exactly the same. That being the case, you just need to figure out how to get the sensor closer to the bottom of the tank.
     
  6. francod123

    francod123 Cruisin' Guzzisti

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    Hi,

    I have my tank off to replace the fuel filter and to access the throttle body. While I'm at it, I think I want to do this mod you've done. I pretty much get everything you've done up to the last part. What exactly did you do to mount the sensor to the pump? I see that you screwed the sensor into where the hole for the rod was, but it looks like the sensor is somehow attached to the filter too? Am I seeing that correctly?

    I'd like to get this done while I have the tank off and ordering the new metal filter. Thanks for any help. My email is francod123@gmail.com as well if you'd rather send me more detailed info there.
     
  7. francod123

    francod123 Cruisin' Guzzisti

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    Ok, I think I got it. You just screwed a hole in flange of the sensor and then screwed it in to the hole of where the rod use to mount. What size bit did you use?
     
  8. francod123

    francod123 Cruisin' Guzzisti

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    I decided not to mess with the sensor. It looks different than pokeyjoe's setup too: the rod seemed attached differently and angled so I left it alone. see pics.
     

    Attached Files:

  9. bdcfe

    bdcfe Tuned and Synch'ed

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  10. francod123

    francod123 Cruisin' Guzzisti

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    I know man tell me about it! The weather here in maryland broke so it's time to ride. Todd's exhaust should be delivered this week so once that's installed I'm all set. Putting the tank back on tonight (had to call it quits after a long evening in the garage putting the TB sleeves back on, resetting TPS and installing Fuel filter). I'm hoping to give some feedback next week sometime.

    Even though it was grueling to do all of this, especially since I've never worked on a bike before, I'm glad I did because I feel like I'm much closer to knowing my bike inside and out.
     
    MOLT likes this.
  11. scudracer

    scudracer Tuned and Synch'ed

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    WOW! I never expected a Cummins Filtration / Fleetguard filter would be able to fit. Fleetguard stuff is USUALLY overspecced for automotive/motorcycle applications.
     
  12. Godfrey

    Godfrey High Miler GT Famiglia

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    Hmm. Your new placement reads low fuel just about when my stock setup on the 2017 V7III Racer does.
     
  13. Joseph McDermott

    Joseph McDermott Just got it firing!

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    Inspired by this discussion I modded my 2015 V7II Stone. I've moved the fuel filter under the frame after experiencing the fun of trying to get the assembly out of the tank with it included.
    DSC01762.JPG
    DSC01739.JPG

    I'll need to replace the filter as it's experiencing the same swelling issue, having it outside the tank should make life easier when the replacement (UFI 31 760 00) arrives.
    DSC01716.JPG

    Moved the thermistor way down and used a tinned copper wire to make a mounting cage to protect it when going in and out of the tank.
    DSC01757.JPG
    DSC01746.JPG
    I'm in Ireland and mostly commute so I'm looking for quite a small reserve as I'll never be far from a petrol station.

    I used the opportunity to paint the underside of the tank as the original paint is light and it should keep corrosion at bay. Paint is drying so it will be tomorrow before I put the tank back on and fill it. We'll see what the changes make to reserve and if the mods play well with pressurized fuel lines.
    DSC01769.JPG
     
    TimmyTheHog and BenRCMC like this.
  14. Joseph McDermott

    Joseph McDermott Just got it firing!

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    Update on mod:

    Result of the lowered thermistor is I can now fill 18L from reserve where previously I was filling 14.8L. I have been able to fill the tank to the bottom of the fill hole (the level you are supposed to fill to max) 21.65L with a bike that still runs so it appears the tank (steel version 2015 V7 II Stone ABS) can hold 21.65L+. So looks like reserve has gone from about 6.85L (way too much in my opinion) to 3.65 (more than enough for me).

    I should add I made a subsequent mod adding a hard pipe to support the filter, align the fuel line to the tank as it was originally and avoid any kinks (an issue as routing hoses gets bendy!). Took 8mm copper pipe filled it with mortar sand, plugged the ends with m6 screws and bent it into a S shape. Sand ensures pipe does not kink just make sure to clean it out thoroughly afterwards. I wrapped it in self amalgamating tape.

    I would suggest leaving a rubber pipe on the injector side of the filter long enough to allow it to be pulled out for replacement by the right cylinder side, there is room for this without excessive bend and risk of kinking. An accessible fuel tap between the copper pipe and filter would actually allow the filter to be replaced without removing the tank or any other preparation which is convenient.

    Bottom line fuel level mod is easy and effective, having the thermistor horizontal has not impaired it's function. Moving the filter is an optional extra with no huge benefits other than a small increase in tank capacity, easier insertion and removal of the fuel pump and easier access to the filter. Against that the filter hardly requires much attention so it's not a huge benefit to move it. It could be considered to detract from the looks of the bike but really you can't see it at all unless you peer between the cylinders up close so it's not really an issue. Perhaps temperature could be an issue with the externally mounted aluminum filter, time will tell.

    Next project tuning fuel map, first re-draught of fueling and ignition tables loaded. Hope to see an improvement in fuel economy, it will take weeks to complete but I'll upload my results.

    Copper pipe bent to shape and cleaned:
    DSC01781.JPG

    Wrapped:
    DSC01783.JPG

    Pipe to tank in original location DSC01792.JPG

    Routing: DSC01791.JPG DSC01790.JPG DSC01789.JPG DSC01786.JPG
    UFI filter - still to go on. DSC01798.JPG
     
    TimmyTheHog likes this.

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