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  1. #1

    By passing fuel sender on slx780

    Hi there

    Is there a way to bypass the fuel sender to prevent going into low fuel low revs mode?
    Is it a case of snipping and joining the wires together like the oil tank so the MFD always thinks its full?

    Cheers

    Mike


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    What do you want to achieve? Working fuel gauge but no warning or just no RPM limit when fuel level gets low?

    Or do you want to disable the fuel level display altogether?

  3. #3
    My MFD is fooked
    So i want to disable the fuel and oil, so i no longer have to worry about the red light kicking in and it bogging down.

    Cheers

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by rallyingmick View Post
    My MFD is fooked
    So i want to disable the fuel and oil, so i no longer have to worry about the red light kicking in and it bogging down.

    Cheers
    Well, if you disable the MFD red lamp then you will not know when you are getting low on fuel.

    Here are some options;

    1) Disconnect the fuel sender wire inside the electrical box. No fuel level display, no red warning lamp.

    OR

    2) Leave fuel sender wire connected. Install an xx ohm resistor between the fuel sender terminal and ground. Value of xx resistor would be calculated to reduce 'tank empty' sender resistance to instead cause the display to show 1/4 tank. So the fuel level would read high, but still somewhat useful.

  5. #5
    BlueFishCrisis's Avatar
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    Is it possible to disconnect the gray wire from the CDI, removing the ability for the MFD/LR module sending the CDI into limp mode, removing limp mode for overheat sensors, but maintaining fuel sender levels and red warning lamp notices for low fuel level AND temp sensors??

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  7. #6
    BlueFishCrisis's Avatar
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    Better yet, how about simply disconnecting the pink from the LR module to the circuit board? Will that disconnect the fuel sender from the CDI limp mode while keeping the temp limit intact?

  8. #7
    Quote Originally Posted by BlueFishCrisis View Post
    Better yet, how about simply disconnecting the pink from the LR module to the circuit board? Will that disconnect the fuel sender from the CDI limp mode while keeping the temp limit intact?
    I will check this out and let you know how we get on tomorrow.

    Did a bit more research into my little ski while im servicing it.
    And since it;s stood the PTO cylinder is bone dry, and the spark plug seems to have some rust on it.

    The others seem to have good wash.
    Ive added a pic looking down the plug hole having not taken the head off yet.
    What do we think guys? it doesnt look good does it

    Click image for larger version. 

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    It has been sat for 10 months if that helps?

  9. #8
    BlueFishCrisis's Avatar
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    May as well pop that head off..... Doesn't look promising.....

    But hey, nice camera getting a pic like that!!!

  10. #9
    120 compression tho???

  11. #10
    BlueFishCrisis's Avatar
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    Quote Originally Posted by rallyingmick View Post
    120 compression tho???
    I would pull the head and get a good look at the cylinder walls and rings. Wouldn't you rather know for sure than just run it and cross your fingers?????

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