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Author Topic: HPFP failed  (Read 9952 times)

Offline vRStu

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Re: HPFP failed
« Reply #15 on: June 03, 2011, 03:56:09 pm »
More likely to be the seal worn I'd think.
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Offline jhono

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Re: HPFP failed
« Reply #16 on: June 03, 2011, 04:54:56 pm »
interesting i have the very same problem,intermittant power loss under full throttle in 4 5 6 gear allways around 2500 rpm,once thru that it runs perfect,just did near 1000 miles on holiday and it never missed a beat,except under full load,other than that you wouldnt know there was anything wrong,even fitted a new maf which has of course improved matters ,but i darnt hand it over to vw,just thinking about driveing it till it gets worse
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Offline Little_Dave

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Re: HPFP failed
« Reply #17 on: June 03, 2011, 05:00:45 pm »
Power = younger wife!
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Offline martziniuk

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Re: HPFP failed
« Reply #18 on: June 03, 2011, 06:23:49 pm »
Did you get fuel in the oil then?
Any fault codes?
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Offline cmdrfire

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Re: HPFP failed
« Reply #19 on: June 03, 2011, 07:45:30 pm »
I'd been "sniffing" the oil before (after reading some other thread where someone picked up a problem this way) and couldn't smell fuel (it's not a regular habit though). There've been no indications of fuel in the oil thus far but I'll get more info.

Quote from: jmspear on June 03, 2011, 03:30:53 pm
make sure they categorically gauarantee that the cam and follower are ok, sounds v suspicious to me that the pump failed yet the follower is ok??? What was the failure mode? sounds like worn or broken plunger in which case I would have expected worn follower, and potentially cam, unlikely plunger would wear that much (to cause fuel cut and power loss, whilst follower was in good condition...........

Don't know the exact failure but I was planning on investigating further with the technician in any case and to maybe get the follower replaced as a matter of course (I've spent this much, what's another £24?). Been informed though that both cam and follower appear nominal (as mentioned, JKM also inspected the follower at around 90k miles and indicated that it looked fine to them).

Quote from: jhono on June 03, 2011, 04:54:56 pm
interesting i have the very same problem,intermittant power loss under full throttle in 4 5 6 gear allways around 2500 rpm,once thru that it runs perfect,just did near 1000 miles on holiday and it never missed a beat,except under full load,other than that you wouldnt know there was anything wrong,even fitted a new maf which has of course improved matters ,but i darnt hand it over to vw,just thinking about driveing it till it gets worse

Sounds exactly like the symptoms I've been suffering over the past year or so. Normally perfect running but in higher gears under load stuttering. I did exactly as you did, drove it until it got worse  :laugh:
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Offline jhono

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Re: HPFP failed
« Reply #20 on: June 04, 2011, 12:34:27 pm »
did you find out what was causing it
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Offline cmdrfire

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Re: HPFP failed
« Reply #21 on: June 04, 2011, 01:14:30 pm »
Quote from: jhono on June 04, 2011, 12:34:27 pm
did you find out what was causing it

The symptoms? Well, yeah, the HPFP on its way out.

As to the specific failure mode of the HPFP, that I don't know (yet) but I've received the APR one and will be hotfooting it down to VW after I grab a bite to eat to drop it off and get more details (including confirmation of the cam follower status).
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Offline jhono

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Re: HPFP failed
« Reply #22 on: June 04, 2011, 01:24:26 pm »
Mmmm would be interesting once you have had it done if it cures the problem,hope it does for you there aint nowt worse than a car you loike with problems,not had mine long and even today got a quote to have the rear bumper colure coded but how far do ya go wen ya car is not running perfect :sad1:
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Offline cmdrfire

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Re: HPFP failed
« Reply #23 on: June 04, 2011, 11:00:31 pm »
Just a quick note, the tech who has actually been doing the work on the car wasn't there today but he'll call me on Tuesday (I'm not in the country on Monday) with more details. They're also very aware of the cam follower/lobe/etc issue and actually had the TSB out and amongst all of the paperwork.
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Offline cmdrfire

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Re: HPFP failed
« Reply #24 on: June 08, 2011, 10:36:10 pm »
Got my car back, feels like new  :love: those 20 horsepowers that went missing feel like they've come back as well.

The follower and lobe are still nominal, as is the associated valvetrain. Should hear back soon what the specific failure on the HPFP was.
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Offline openside

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Re: HPFP failed
« Reply #25 on: June 09, 2011, 10:02:12 am »
Quote from: cmdrfire on June 08, 2011, 10:36:10 pm
Got my car back, feels like new  :love: those 20 horsepowers that went missing feel like they've come back as well.

The follower and lobe are still nominal, as is the associated valvetrain. Should hear back soon what the specific failure on the HPFP was.

Glad everything's been resolved. Nothing worse than chasing a fault! Thankfully, after i changed my spark plugs my problem hasn't returned,. However, everytime i put it under load im still expecting it to misfire. Didn't think it would be as simple as spark plugs. Only time will tell!!
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Offline RedRobin

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Re: HPFP failed
« Reply #26 on: June 09, 2011, 10:29:31 am »
^^^^
Glad to hear it's all resolved, Neo  :happy2:    [Have you now got time to progress the LED project?]

Does anyone know if the OEM fuel pump has ever been revised by VW?
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Offline Hedge

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Re: HPFP failed
« Reply #27 on: June 09, 2011, 10:31:04 am »
Just out of interest did you renew the follower?
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Offline martziniuk

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Re: HPFP failed
« Reply #28 on: June 09, 2011, 12:14:50 pm »
Quote from: RedRobin on June 09, 2011, 10:29:31 am
^^^^
Glad to hear it's all resolved, Neo  :happy2:    [Have you now got time to progress the LED project?]

Does anyone know if the OEM fuel pump has ever been revised by VW?
Yes it has been revised a few times now, The latest is a rev k.
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Offline Boothy

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Re: HPFP failed
« Reply #29 on: June 09, 2011, 12:58:26 pm »
Quote from: cmdrfire on June 08, 2011, 10:36:10 pm
Got my car back, feels like new  :love: those 20 horsepowers that went missing feel like they've come back as well.

The follower and lobe are still nominal, as is the associated valvetrain. Should hear back soon what the specific failure on the HPFP was.

What mileage you got on yours mate? Mines in with a similar issue except it only does it under light loads, not heavy and I'm crossing my fingers its not a damaged camshaft and follower. 
 
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