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S3 Fuel Pump Into A3 Fuel Pump Housing, Help Please!

VAG-Slag Aug 17, 2014

  1. VAG-Slag

    VAG-Slag Well-Known Member

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    I've just removed my fuel pump to fit the S3 pump I have bit I've noticed the S3 pump has an extra inlet/outlet that isn't on the original pump... I'm guessing its the fuel return?

    Do I just take this hose:
    [​IMG]

    And stick it on this bit of the new pump:
    [​IMG]

    Or do I need a S3 housing?...

    Thanks
     
    Last edited: Aug 18, 2014
  2. Machine212

    Machine212 Active Member

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    S3 has two fuel pumps, pretty sure the extra pipe is where it receives fuel from the other pump. Should be fine without it.
     
    Last edited: Aug 17, 2014
  3. snowy

    snowy Active Member

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    thats an outlet to feed the 2nd pump, not a return
    the 2nd pump is a venturi pressure driven type thing
    just point the s3 2nd outlet back into tank
    as in an lcr
     
  4. Machine212

    Machine212 Active Member

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    Ah thats it, got it the other way round. Doesn't receive fuel, sends it to the other pump.
     
  5. VAG-Slag

    VAG-Slag Well-Known Member

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    Cool, cheers for your help fallas... I've had a little fiddle and bodged this together:
    [​IMG]

    Will that do the job? . .

    p.s that pipe ends pretty much as soon as it's out of shot
     
  6. Machine212

    Machine212 Active Member

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    I would guess so! Heres a picture of mine i did not too long ago. This is an S3 one though.

    10492167_10152139339216836_6345511765001876305_n.jpg
     
  7. badger5

    badger5 www.badger5.co.uk Site Sponsor

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    you block the additional outlet up.
    sytec pump would have been simpler
     
  8. snowy

    snowy Active Member

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    For ref, a pic of the LCR swirl pot - the secondary feed is the black line fed into the bottom of the swirl pot


    [​IMG]
     
  9. badger5

    badger5 www.badger5.co.uk Site Sponsor

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    thats a non VDO pump pictured btw.. VDO is the most commonly fitted.. and does'nt look like your pictured one
     
  10. snowy

    snowy Active Member

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    The pic is merely to illustrate how VAG themselves designed a swirl pot to fit a dual outlet pump into a single pump application
     
  11. badger5

    badger5 www.badger5.co.uk Site Sponsor

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    I see now... but the op's pump was VDO and does'nt have this type
     
  12. VAG-Slag

    VAG-Slag Well-Known Member

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    Cheers for the heads up Bill, I'll block the end of that hose off before putting it back in the tank then... Was gonna give you a call to talk about other fuel pump option soon anyway!
     

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