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VP 5.7 Fuel Flow Meter

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  • VP 5.7 Fuel Flow Meter

    Hi,

    I recently asked the marine electrician if he could install a fuel flow meter/sensor on my 5.7 GI VP but he said that as it was EFI there was no meter available that he was aware of. Apparently the problem (as he explained it to me) is that the ECU requests a goop of fuel and pressurises it but the injectors only use a portion and the rest is returned to the tank on a return line so it is impossible to get an accurate reading.

    My previous Mercury Optimax outboard was fuel injected and I used the smartcraft link to link it to my Navman where it gave me instant fuel consumption readings so what's the difference between outboard and inboard fuel injection?

    I searched and Garmin offer a GFS10 kit (https://buy.garmin.com/shop/shop.do?pID=11561) but I thought I'd better check before I dive in and buy something I mightn't full understand.

    Kind Regards,

    David.
    ----------------
    2006 Mustang 4200 Hard Top Sports Cruiser, VP 8.1Gi-F, DP-S

  • #2
    Re: VP 5.7 Fuel Flow Meter

    is that the ECU requests a goop of fuel and pressurises it but the injectors only use a portion and the rest is returned to the tank on a return line so it is impossible to get an accurate reading.
    Nope, that's not how it works. Volvo's (and Mercruisers) DO NOT have a return to the tank, they have a vapor seperator tank built into the fuel cell, return fuel not used by the injectors is returned to the VST. So any fuel that comes from the fuel tank will be what the engine demands to run
    If you put that sensor between the gas tank and the engine, it should work fine. I will also say that I know the Floscan sensors work on marine EFI, I have not had any dealings with Garmin. But if you contact Garmin, I am sure they know which engines work and don't work with their sensors.
    Don S.


    Please, no PM's (Private Messages) regarding boat/engine problems.
    That is what the forums are for.
    Only forum/moderator issues will be answered in PM's.

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    • #3
      Re: VP 5.7 Fuel Flow Meter

      As far as I know the Garmin GFS 10 sensor hasn't been released to vendors yet. I've had one on order for over a month now and the vendor says it'll be the end of June or early July before they get stock. The Garmin site doesn't list any specific engine(s) or types of engines that it will or will not work on.
      Yours Aye! Rick
      ============================
      Bateau.com TW28 Modified under construction: http://she-kon.blogspot.ca/

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      • #4
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        Re: VP 5.7 Fuel Flow Meter

        Originally posted by KnottyBuoyz View Post
        As far as I know the Garmin GFS 10 sensor hasn't been released to vendors yet. I've had one on order for over a month now and the vendor says it'll be the end of June or early July before they get stock. The Garmin site doesn't list any specific engine(s) or types of engines that it will or will not work on.
        I have the Garmin GPSMap 525s and I believe it has an NMEA port on the back that the sensor should plug straight into. Does this mean I don't need to worry about the Garmin CAANET if I'm only using one additional 'device'?

        Also, is it possible to 'piggyback' connections to the tank sensor so by enabling a fuel flow meter I don't kill the fuel gauge?
        ----------------
        2006 Mustang 4200 Hard Top Sports Cruiser, VP 8.1Gi-F, DP-S

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