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Diesel return to fuel tank

Discussion in 'Series Land Rovers' started by sev2000, Jan 14, 2022.

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  1. sev2000

    sev2000 Member

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    Hi, I am fitting a 200 TDI into a series 3 lightweight, the fuel tank was originally for petrol, I now need a diesel return pipe to the tank. The tank has been refurbished, so I don't want to weld anything on to it. Has anyone any ideas of how best to do this, I have been advised to return it through the fuel sender?
     
  2. Wildefalcon

    Wildefalcon Well-Known Member

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    Later senders have a fuel pick up, so that's possible, but I think they're bayonet fitting, rather than the 6 bolts on earlier tanks. So drill the sender and use a diesel rated bulkhead fitting to get the fuel back in.
     
  3. sev2000

    sev2000 Member

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    Thanks, does the return pipe have to go down to the bottom of the tank? I have heard that if the pipe is short, it can draw air into the system.
     
  4. Wildefalcon

    Wildefalcon Well-Known Member

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    It's best, I think, as it doesn't make the fuel froth, but can't see it's all that different from filling the tank at the fuel station.
    My 109 TDI returned diesel to the top up the tank for years, I put a tee into the balance pipe between the two chambers in the rear tank.
     
  5. steve2286w

    steve2286w Well-Known Member

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    I think you’re right as I recall the return is shorter than the suction which has a gauze on it, but it won’t draw air in as it’s a return pipe, air can be drawn in via suction pipe if split and tank level low or holed from tank to pump
    You can’t return it via the sender as it’s sealed
    If yours does not have the blank plate ready you will need to drill holes and screw on as below 7EC54FAC-620F-4507-AAFB-8704533465DE.png
     
  6. lynall

    lynall Well-Known Member

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    Blackburn likes this.
  7. sev2000

    sev2000 Member

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    Thanks to everyone the help, much appreciated.
     
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