Replies

  • Are you able to post photos of what your looking at? I believe the purple wire is for a fuel pressure sensor. Jan has or had a U-tube video discussing all ECU wires and sensors; probably located in the Installation section of web site. Are your two fuel pumps the type Viking provides built into the header tank?
    • Viking 130
      It’s a purple and white wire labeled fuel pump relay
    • Do you have the Viking DVD for installing the 130? I believe that's where Jan discusses all the wires.
    • Yes I do but it does not mention it I’m assuming different edition.
    • Ours has a purple/yellow wire which goes between the engines fuel pump and ECU.
    • https://www.facebook.com/Experimental750ES/photos/a.217191788661287...

      correction: ECU Fuel Pressure Regulator 2 wires: purple/yellow, white The ECU regulates the high pressure fuel using pulse modulation of an internal stainless steel bypass needle in the mechanical fuel pump.

      Posted by Experimental 750ES on Wednesday, August 16, 2017
    • I thought that was it as well but this is just one single wire purple with white stripe. I’m thinking it may just need power to it but hoping Jan might chime in after sun n fun.
    • I will try to get a picture of what I am talking about soon.
    • I have updated the post with a picture.
    • Anyone have any idea. My thinking is possibly needs power for the main pressure up on the engine, but obviously I want to be 100% correct, as this may not need connected at all with our system.
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