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  1. #1

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    No current to fuel pump

    While out riding yesterday I cut off my FZR to talk to someone only for it not to recrank. Had to get friend to tow me back to ramp. Checked all fuses they were ok. Found out I have no current going to Fuel pump or Bilge pump. Need help. Oldman


  2. #2
    FZS-T
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    Check the fuses again the Fuel pump and Bilge pump are linked to the same Fuse..

  3. #3

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    Have rechecked all fuses with om meter all check good.

  4. #4
    Whats that whistling noise? jtskier11's Avatar
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    Does the fzr have a relay controlling both of those?

  5. #5
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    If the fuses are ok then most likely the fuel pump relay is bad.

  6. #6
    SpeedJunky's Avatar
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    Quote Originally Posted by jtskier11 View Post
    Does the fzr have a relay controlling both of those?
    Good thinking.

    I looked at the schematic in the back of the manual and you are correct, they both go to a relay labeled " Main and fuel pump relay".

    Manual has testing procedure on this relay, starting on page 7-45.

    You also may want to check the connector the relay plugs into.

    Good luck

  7. #7
    Whats that whistling noise? jtskier11's Avatar
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    Quote Originally Posted by SpeedJunky View Post
    Good thinking.

    I looked at the schematic in the back of the manual and you are correct, they both go to a relay labeled " Main and fuel pump relay".

    Manual has testing procedure on this relay, starting on page 7-45.

    You also may want to check the connector the relay plugs into.

    Good luck
    As long as its a Bosch style relay they are cheap to replace. You can also swap a 5 pin Bosch relay from your car/truck to test if you don't feel like fully testing the relay with 12 volts and a meter. The coil (pin 85 and 86) may be energizing but the contacts (pin 30 and 87) could be burnt and not passing voltage.

  8. #8

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    try linking pins 30 to 87 with a bit of wire and see if it works. then you will know for definate its the relay.

  9. #9
    Addicted Member 5001craig's Avatar
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    Quote Originally Posted by jtskier11 View Post
    As long as its a Bosch style relay they are cheap to replace. You can also swap a 5 pin Bosch relay from your car/truck to test if you don't feel like fully testing the relay with 12 volts and a meter. The coil (pin 85 and 86) may be energizing but the contacts (pin 30 and 87) could be burnt and not passing voltage.
    I had this exact same thing happen to me on a different boat. There was a hole burned right through where the contacts made contact. I installed a new relay and all was good (happened to have a good potted one).

  10. #10
    Whats that whistling noise? jtskier11's Avatar
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    Quote Originally Posted by 5001craig View Post
    I had this exact same thing happen to me on a different boat. There was a hole burned right through where the contacts made contact. I installed a new relay and all was good (happened to have a good potted one).
    It happens. It could even be a build-up of corrosion on the relay contacts. That just creates resistance which builds and burns the contacts. Sometimes the fuel pump or whatever else may be on that circuit, when failing, can draws so much amperage that it will start to fry the relay contacts. It can even melt the socket pins on the relay/fuse panel. Just make sure when you replace the relay it is of sufficient amperage and has some suppression. Preferably a diode to clamp the stray voltage when the relay unclamps. Believe it or not there can be very high transient voltage around the coil. If not for the diode, that voltage can spike back up to the triggering device (transistor in the ECU that is normally used to switching a ground trigger) and fry it!!

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