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FM4 Installation gas line?

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  • FM4 Installation gas line?

    I'm installing a FM4. I heard you can use 1/2" for up to 26'. If you are installing for more than 26' you need a 3/4" line. I also heard you need a 1" line all the way. Does anyone have any firm foundation on this?

  • #2
    Re: FM4 Installation gas line?

    If you're running a new line, use the largest size as the cost of the pipe itself is minimal. If you have an existing 1/2" line go ahead and use it. If it's the only thing on the line, you should be fine way past 26'.
    02 GX
    01 GX
    03 Crown Vic
    06 GX
    Home Fueler


    • #3
      Re: FM4 Installation gas line?

      I have a line that Tees out of the main line into the house. That tee goes into the garage, I can tap into it. I don't know how much pressure there will be in a 1/2" line. I talked to Sno-Motions. Rick said 3/4" for a fuel maker.


      • #4
        Re: FM4 Installation gas line?

        I always use 1 1/4 " gas line to all FuelMaker VRA's, (FM4, FM2 or FMQ2-36)gives you a little extra in the line when it goes through the initial start up and less chance of low pressure error out.
        Dave Clement