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Fuels & Lubricants Discussion all about Fuels & Lubricants. synthetic oil, conventional oil, brands, change intervals, diesel grades, gelling and such debated items like that. Non TDI related postings will be moved or removed. This forum is NOT for the discussion of biodiesel and other alternative fuels.

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Old November 10th, 2010, 14:07   #1
Trooper81
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Default HPFP Failure in V6 TDI, or only in 2.0 CR?

Hey everyone,

I Haven't seen anyone post a failure of their HPFP that drives a Touareg with the v6 tdi. So can we safely assume they arn't affected? Also, I noticed most failures in the USA, are there any failures reported in Canada? Does this point to a difference in fuel quality?
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Old November 11th, 2010, 13:03   #2
tditom
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Quote:
Originally Posted by Trooper81 View Post
Hey everyone,

I Haven't seen anyone post a failure of their HPFP that drives a Touareg with the v6 tdi. So can we safely assume they arn't affected? Also, I noticed most failures in the USA, are there any failures reported in Canada? Does this point to a difference in fuel quality?
Haven't seen a report on the V6 yet.

Canada has the more stringent lubricity requirement.
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Old November 11th, 2010, 18:24   #3
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Default adblue

Does urea solution additive also have lubricity additives?
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Old November 11th, 2010, 18:25   #4
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I believe urea is injected AFTER combustion, in the exhaust, but I might just be peeing into the wind...
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Old November 11th, 2010, 18:33   #5
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I believe urea is injected AFTER combustion, in the exhaust, but I might just be peeing into the wind...
b'dump-cheeeee (rim shot sound effect)

Yes- the adblue/urea injection system is completely different than the high pressure fuel pump feeding diesel through the common rail.

Lubricity is a non-issue in urea.
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Old November 11th, 2010, 18:37   #6
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Originally Posted by tditom View Post
b'dump-cheeeee (rim shot sound effect)

Yes- the adblue/urea injection system is completely different than the high pressure fuel pump feeding diesel through the common rail.

Lubricity is a non-issue in urea.
OOooo, duh...Please forgive my mistake
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Old November 12th, 2010, 01:12   #7
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Just heard of a guy in sweden that had his HPFP disentigrate on his 2008 V6 TDI touareg leaving metal shards in his fuel system, with the typical replacement of everything fuel related, this is with Euro fuel!
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Old November 12th, 2010, 05:35   #8
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Quote:
Originally Posted by Trooper81 View Post
Just heard of a guy in sweden that had his HPFP disentigrate on his 2008 V6 TDI touareg leaving metal shards in his fuel system, with the typical replacement of everything fuel related, this is with Euro fuel!
This will mean nothng to most of us here unless you get us details.
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Old November 12th, 2010, 10:07   #9
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This will mean nothng to most of us here unless you get us details.

http://www.clubtouareg.com/forums/f4...ery-47205.html
the link shows all the details i know..

HE said they replaced his fuel system under warranty, when asked about it he says.

"The reason given for replacing the complete fuel system was traces of metal chips from somewhere ending up in the HPFP. Most likely left in some part from manufacture and not cleaned properly before assembly."

sound familiar?
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Old November 12th, 2010, 10:42   #10
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Thanks, Trooper, for the link.

Curious that, at 7000k, the HPFP grenades and they blame it on sloppy manufacturing? That doesn't make sense to me.
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Old November 12th, 2010, 12:50   #11
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As I've mentioned in the past, CR- pumps have been disintegrating here in Europe since 2000-ish. Early Peugeot HDIs were notorious for it...
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Old November 13th, 2010, 02:00   #12
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Maybe this is really a pump manufacturing issue, i wonder if BOSCH makes all the pumps, including the ones BMW recalled.
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Old November 13th, 2010, 09:52   #13
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Bosch pumps used by BMW diesels have been fine. HPFP recall was on their gassers.
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Old November 13th, 2010, 10:01   #14
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Quote:
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Bosch pumps used by BMW diesels have been fine. HPFP recall was on their gassers.

BMW are 6cyl. Do any 6cyl HPFP explode? Is there any data on 6 vs 4, build date, model, manufacturers, that even slightly clarifies the defect? And yes I am deliberately saying defect.
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Old November 13th, 2010, 10:32   #15
tditom
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BMW also makes 4 cyl diesels that they sell in the rest of the world. Haven't heard about widespread Bosch diesel HPFP failures (4, 6 or 8 cyl) much outside the US, but DPM indicates above that there have been problems in the past.
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