Make a donation
« previous next »
Pages: 1 2 [3] 4 5 6   Go Down

Author Topic: Autotech HPFP failure  (Read 44598 times)

Offline KRL

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 25
  • -Receive: 29
  • Posts: 619
Re: Autotech HPFP failure
« Reply #30 on: December 30, 2010, 11:55:32 pm »
Quote from: vRStu on December 30, 2010, 11:39:36 pm
You cannot change the seal AFAIK, it certainly isn't listed by VAG, maybe you could source it 3rd party or from Hitachi but I wouldn't hold out much hope.

APR do change the seal.

Bummer if the seals are hard to come by :(

I know APR change the seal but I was wondering they upgrade it somehow or if the just replace it with another OEM one.
Logged

Offline muckipup

  • Always Involved
  • ****
  • Thank You
  • -Given: 13
  • -Receive: 25
  • Posts: 419
Re: Autotech HPFP failure
« Reply #31 on: December 31, 2010, 12:03:07 am »
Quote from: KRL on December 30, 2010, 11:37:37 pm
Sorry to hear about this problem muckipup.

I would like to understand two things:

1.  This link from JKM you posted (http://www.jkm.org.uk/performance/Misc/Misc_Performance_pictures/APR%20Pump/tech/pumpimages/Visio3_big.jpg) seems to imply that stepped pistons will put more pressure on the the fuel pump seals than a non stepped piston.  Is this correct?

2.  I would like some more information on how often the seals have been failing and weather APR does upgrade the seal or use the OEM one.  I would like to know if I should change my seal after x number of miles?



Those are very fair questions KRL. There are a few more links to HPFPs, I only picked one to highlight a hypothesis. It is only a hypothesis which kinda makes sense to me in a non-expert way. I can't speak for JKM and I don't think they will speak for themselves (in fairness, I think they voted with their feet as this is a sensitive issue as you know)

Again, I don't know of the failure rate of OEM seals, the back/return pressure of after-market internals running higher rail pressures and I can't speak for APRs engineering methods. I reckon it would need some kind of formal study rather than a forum to be accurate on that one. All I can do is report my experience in a non-judgemental way and say 'sniff the dipstick' again and again
Logged

Offline muckipup

  • Always Involved
  • ****
  • Thank You
  • -Given: 13
  • -Receive: 25
  • Posts: 419
Re: Autotech HPFP failure
« Reply #32 on: December 31, 2010, 12:06:38 am »
Jeeeziz, just read my own post back and was knocked sideways about what a non-commital pussy I was  :ashamed: I'll get another large gin and be gone. Peace be with you  :drinking:
Logged

Offline KRL

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 25
  • -Receive: 29
  • Posts: 619
Re: Autotech HPFP failure
« Reply #33 on: January 02, 2011, 03:14:46 pm »
Did you do any logs of your car while the problem was active?  Just wondering if this can be spotted through logging - for example maybe the rail pressure would not be able to meet requested if fuel is leaking through the seal.
Logged

Offline vRS Carl

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 282
  • -Receive: 240
  • Posts: 3088
  • I'm the F.A.G (Forum Apple Guru)
Re: Autotech HPFP failure
« Reply #34 on: January 02, 2011, 03:39:49 pm »
No the only way to see the problem is if fuel gets in the oil.

The problem is when the piston is on the return stroke. So it won't show a drop in rail pressure.
Logged

Offline yin

  • Always Involved
  • ****
  • Thank You
  • -Given: 77
  • -Receive: 18
  • Posts: 420
  • Seat Leon Cupra Tfsi Its nearly a Golf
    • Email
Re: Autotech HPFP failure
« Reply #35 on: January 02, 2011, 04:08:45 pm »
Don't know if this is true but have been told Pump seal failure is what killed the engine on Revo's  K1
Logged

Offline Janner_Sy

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 62
  • -Receive: 113
  • Posts: 5392
Re: Autotech HPFP failure
« Reply #36 on: January 02, 2011, 04:35:06 pm »
i wasnt aware of a failure on REVOs K1 demo car????

In all fairness they would always blame a hardware fault and not software
« Last Edit: January 02, 2011, 04:42:41 pm by Janner_Sy »
Logged

Offline vRS Carl

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 282
  • -Receive: 240
  • Posts: 3088
  • I'm the F.A.G (Forum Apple Guru)
Re: Autotech HPFP failure
« Reply #37 on: January 02, 2011, 04:41:35 pm »
There is NEVER a fault with the software. Its always a boost leak :laugh:
Logged

Offline Janner_Sy

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 62
  • -Receive: 113
  • Posts: 5392
Re: Autotech HPFP failure
« Reply #38 on: January 02, 2011, 04:44:49 pm »
I wander how this was kept out of the forums for so long.  Are they running the K1 with a new engine now or have they handed it off to some one else
Logged

Offline RobH

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 3
  • -Receive: 9
  • Posts: 581
  • Revo stg 2+
Re: Autotech HPFP failure
« Reply #39 on: January 02, 2011, 04:49:13 pm »
I have herd of a couple of these now, Revo's K1 been one of them and an S3 apperently so an APR pump might be on the cards, also headgaskets seem to have gone on a couple of cars all needing new engines :scared:

Talking to INA the headgasket is above industry standards and its the bolts which look a bit weak so maybe ARP bolts might not be a bad idea for longevity. I think there around 200 USD shipped to anywhere in the UK.

Maybe stage 2+ is starting to catch up on a couple of engines.

Off to go smell the dipstick now.
Logged

Offline Janner_Sy

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 62
  • -Receive: 113
  • Posts: 5392
Re: Autotech HPFP failure
« Reply #40 on: January 02, 2011, 04:53:31 pm »
in all fairness, Al (DJhorice) has been saying this for a while and also knows of a few engines going t!ts up
Logged

Offline djhorace

  • Always Involved
  • ****
  • Thank You
  • -Given: 1
  • -Receive: 6
  • Posts: 459
Re: Autotech HPFP failure
« Reply #41 on: January 02, 2011, 05:32:25 pm »
Yep, I have, and one of the reasons my new car is still standard for now.

I am taking my fuel pump with KMD internals to Texas in the near future to be APR upgraded though as may well be tempted to up power a little this year once I have got past any teething issues on the car. I would also be looking to check strength of head gasket and bolts too if I go back to S2+.
Logged

Offline KRL

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 25
  • -Receive: 29
  • Posts: 619
Re: Autotech HPFP failure
« Reply #42 on: January 02, 2011, 07:06:00 pm »
I think I will start doing some oil analysis every other oil change to catch problems like this.  A quick google found this company:
http://www.theoillab.co.uk/

A report costs £26.95.  Think this could be well worth it in the long run if you weigh it up against the costs of potential failure.
Logged

Offline Janner_Sy

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 62
  • -Receive: 113
  • Posts: 5392
Re: Autotech HPFP failure
« Reply #43 on: January 02, 2011, 07:11:19 pm »
thats a good idea.
Logged

Offline vRStu

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 90
  • -Receive: 159
  • Posts: 2562
    • Octavia-vRS Information Resource
Re: Autotech HPFP failure
« Reply #44 on: January 02, 2011, 09:07:19 pm »
Quote from: KRL on January 02, 2011, 07:06:00 pm
I think I will start doing some oil analysis every other oil change to catch problems like this.  A quick google found this company:
http://www.theoillab.co.uk/

A report costs £26.95.  Think this could be well worth it in the long run if you weigh it up against the costs of potential failure.

We use a similar thing at work - Spectrographic oil analysis
Logged
Stu...

Quartz Grey Audi A4 3.0 TDi S-Line Quattro, 7 Speed S-Tronic, 19" Twin Spoke Alloys, Alcantara Upholstery with Silver Stitching and Heating, Sat Nav High, B & O Sound, Audi Music Interface, DAB Radio, Parking Advanced with Rear View Camera, Advanced Keyless Entry, LED Interior Light Pack, Hill Hold Assist, Heated and Electrically Folding Mirrors, Through Load.

RNS510 Video in Motion unlocking, PIN recovery & DVD Region Free available
Pages: 1 2 [3] 4 5 6   Go Up
« previous next »