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Best way to prime a Oil Pump after its been installed in a LS1 ..5.7

Discussion in 'General' started by kangaaa, Nov 2, 2016.

  1. kangaaa

    kangaaa New Member

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    Hi All
    Have just put a Mellings Oil Pump into my Car ( VU ute ) and have whacked it all back together..
    let it turn a few times without fuel Relay in..
    then kicked it over..
    but turned back off after 5 secs as no oil Preasure and top was noisy...
    Just been reading that you need to prime it..
    just wanted to know the best way to do it without having to rip it all apart again. if Possible

    Thanks ...
     
  2. blackve76

    blackve76 Well-Known Member

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    pull plugs and turn over with starter

    if no pressure might be a problem, O ring
     
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  3. Bigfella237

    Bigfella237 Well-Known Member

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    Melling actually have a YouTube video on this very subject...



    [​IMG]

    Andrew
     
    Last edited by a moderator: Nov 21, 2016
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  4. kangaaa

    kangaaa New Member

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    Thanks ... Never had to prime one .... i will give it a go...:)
     
  5. 07GTS

    07GTS Well-Known Member

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    if ur going to be cranking it for a bit then take out the fuse for the injectors also so ur not flooding it, think coils have a fuse also to make it easier
     
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  6. Bigfella237

    Bigfella237 Well-Known Member

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    Wouldn't that throw a heap of trouble codes, which would then need to be cleared?
     
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  7. 07GTS

    07GTS Well-Known Member

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    yea they will clear themselves when its started and plugged back in only minor codes for the injectors o/c, u will get alot of fuel in for cold start and each start has a prime pulse also
     
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  8. strgas

    strgas GRA = REAL HP

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    https://www.youtube.com/watch?v=thfTnYdeNz8

    using a tool like this will prime most engines if no gallery plug remove oil pressure switch and prime from there , just don't be like my old boss trying to run 100+ psi air pressure to prime the system and then leave the bottle connect and wonder why the oil pan is over full 29+ litres of oil later and the truck smoking like BBQ up the road later ...
     
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  9. kangaaa

    kangaaa New Member

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    got a Pic up..... Have primed it without using Preasure... will start it tommorow... will post an update

    Jost gotta claen motor once finished


    Thankyou for the Help....

    14970879_1292749997423209_186379455_o.jpg

    14970958_1292749987423210_2085371052_o.jpg
     
    Last edited: Nov 8, 2016
  10. Bigfella237

    Bigfella237 Well-Known Member

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    LOL... I never knew they made an NPT adapter for a Coke bottle thread?

    Love yer work kangaaa!
     
  11. kangaaa

    kangaaa New Member

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    Update.....
    got it to start pumping then all of a sudden the Tapping noise came back..
    i am thinking the O ring cant be sealing now......did put a new one in when i did the new pump...
    One more go tommorow and if that dont work i will be removing the engine and sumps to see why....
    dont know what else to try..
    getting frustrated with it now....:)
     
  12. Bigfella237

    Bigfella237 Well-Known Member

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    I suppose the real question is: Why did you replace the oil pump in the first place?

    Could it be possible that the oil pump wasn't the problem and whatever was the problem is still present? Is the pickup screen gunked-up or the tube cracked above the oil level? Is the relief valve opening early/sticking? Do you have some mechanical problem causing the loss of pressure (bearings/lifters/etc.)?

    Being an LS1 I assume it doesn't have AFM/DOD or VVT (both of which operate off oil pressure)? Did you buy the correct pump (the oil pumps for AFM engines are physically interchangeable but are higher pressure, possibly activating your lower pressure relief valve)?

    Andrew
     
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  13. kangaaa

    kangaaa New Member

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    Sump...1.jpg Ok,,, after romoving the Motor and pulling off the sump... found a Blockage
    i run a Motor Clean thru it 3 monthes before ... but had no signs of any blockage
    seema Like it is all going well now.... but time will Tell.... thanks for everyones input
    :)
     
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  14. liam hollywood

    liam hollywood New Member

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    im having the same problem with my vu just put the engine in all done corectly i expected a little bit of a rattle for a few seconds it just got worse over 30 sec ifilled it through yhe oil pressure sensor and bung to give it a deacent chance i just didnt want to damage an expensive engine
     
  15. VFSSBlackLS3

    VFSSBlackLS3 New Member

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    I didn't realise that they needed priming... I never primed mine on my LS1s...
    what I did do though was fill them up at least halfway with oil before I put them on
     

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