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Hpfp problem

Discussion in 'A3/S3/Sportback (8P Chassis)' started by Adamj, Jul 13, 2013.

  1. Adamj
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    Adamj Member

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    Hi guys I had a hpfp internals fitted by Amd about 3 months ago, recently it a stage 2+ map by (rick at unicorn) top guy, anyway I was driving my car today and all of a sudden I lost power, pulled over as I was on the m1, and there was oil everywhere looked at my pump and all 3 bolts have completely snapped off, I managed to get it home, and noticed a little black bit had snapped off on the pump, what would have caused this? Il try and get pictures up later
    Last edited: Jul 14, 2013
    #1
  2. TDI140
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    TDI140 Well-Known Member

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    Kind off need to mention what car it is what engine etc etc
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  3. voorhees
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    voorhees Moderator Staff Member Moderator

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    You drove it home with the fuel pump knackered ? Did you change the cam follower when upgrading the insides ?
    #3
  4. Adamj
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    Adamj Member

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    Sorry guys its a 2007 s3, eah the cam follower got replaced, the bit that snapped off seems to be off the top of the pump there's a little circular plastic which Half has snapped off
    #4
  5. voorhees
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    voorhees Moderator Staff Member Moderator

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    [​IMG]
    Heres a pic
    #5
  6. Adamj
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    Adamj Member

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    Yeah that's the one all 3 bolts snapped off what would have caused?
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  7. voorhees
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    voorhees Moderator Staff Member Moderator

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    Who fitted the pump ?
    #7
  8. Adamj
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    Adamj Member

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    Here's some pictures

    Attached Files:

    #8
  9. Chillout
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    Chillout Member

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    Maybe the pump seized and was forced off did it pop the heads off the bolts or shear them
    or suppose it could have come up against resistance maybe the internals broke up.
    was typing as you put the pics up was it over tightened when fitted looks like you will need easy outs to remove them
    #9
  10. voorhees
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    voorhees Moderator Staff Member Moderator

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    Hopefully it was overtightened and not an internal failure,good call chillout
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  11. Adamj
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    Adamj Member

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    Il have to send to amd to check t out as I have no idea if any damage was done due to internals possibley failing
    #11
  12. Adamj
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    Adamj Member

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    How would over tightening make the bolts snap?
    #12
  13. Chillout
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    Chillout Member

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    Yes it could do especially as the are flush if a bolt for example was to snap at the back of a nut it would be due to all the tension being on the first thread.
    Last edited: Jul 13, 2013
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  14. voorhees
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    voorhees Moderator Staff Member Moderator

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    Overtightening
    #14
    phil76 likes this.
  15. Kelza
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    Kelza MODERATOR Staff Member Moderator

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    ?​
    #15
  16. Adamj
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    Adamj Member

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    Amd in Essex fitted it
    #16
  17. Kelza
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    Kelza MODERATOR Staff Member Moderator

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  18. Chillout
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    Chillout Member

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    I think the bolts should be tightened to 10 NM and I think the kits come withe new bolts too.
    #18
  19. Adamj
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    Adamj Member

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    Well il have to get some new bolts during the week but I want to send the pump there to check to see if the internals are ok
    #19
  20. Kelza
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    Kelza MODERATOR Staff Member Moderator

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  21. Adamj
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    Adamj Member

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    Cheers mate so do I :(.... I have heard a few horror stories about internals would it be worth getting the apr or loba complete pump?
    #21
  22. Kelza
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    Kelza MODERATOR Staff Member Moderator

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    Hi adam i had the autotech from new with no problems in just over a year ,but i do hear good comments about the loba uprated pump....
    #22

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