Wills250psd
walnutcove NC
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Joined: 08/13/2011
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Good Sam RV Club Member
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OK ONE MORE
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Capt Skup
Southern Maryland/Nantucket
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Joined: 05/14/2004
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1001!
Capt Skup
AD-1(AW)USNRet.
Wonderful Wife,3 Daughters,2Goldens Gus&Riley
"Never get in a battle of wits with an unarmed man"
F-450 Lariat 4x4
Honda Odyssey EX-L
SunlineF281SR
SeaRay 240 Sundeck
http://community.webshots.com/user/CaptSkup?vhost=community
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NinerBikes
Somewhere camping
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Joined: 03/14/2012
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Why piezo injectors go BOOM and grenade your whole fuel system?
This explains a lot of things, also explains why 2012 and 2013 Passat TDI's with SOLENOID INJECTORS are not destroying HPFP's, while piezo injectors, even in 1600 bar VW V6 3.0L TDI's with piezo still are wrecking HPFP's.
The mechanic I spoke with recently said that they've done at least 4 HPFP's on 2009-2010 Touareg TDI's. I've no idea when Vw will switch the Touareg over to solenoid injectors, if they haven't already or if it's a 2013 development.
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NinerBikes
Somewhere camping
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Go to post #7 in the original link above.
* This post was
edited 07/29/12 11:16pm by NinerBikes *
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Jarlaxle
New England
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Joined: 11/18/2006
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Bad link.
John and Elizabeth (Liz), with 3 nutty cats
My beloved St. Bernard, Marm, lost him 1/2/12
Current rig:
1992 International Genesis school bus conversion
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NinerBikes
Somewhere camping
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Go down to post #7 in the original link?
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Jarlaxle
New England
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The link does not work. The page linked to does not exist. Clicking it gives an error message.
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NinerBikes
Somewhere camping
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Try this
or cut and paste this in your browser.. http://www.myturbodiesel.com/forum/f19/common-rail-fuel-system-failures-17657/#post70238
Jarlaxle wrote:The link does not work. The page linked to does not exist. Clicking it gives an error message.
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NewsW
US
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Joined: 02/06/2012
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NinerBikes wrote:Why piezo injectors go BOOM and grenade your whole fuel system?
This explains a lot of things, also explains why 2012 and 2013 Passat TDI's with SOLENOID INJECTORS are not destroying HPFP's, while piezo injectors, even in 1600 bar VW V6 3.0L TDI's with piezo still are wrecking HPFP's.
The mechanic I spoke with recently said that they've done at least 4 HPFP's on 2009-2010 Touareg TDI's. I've no idea when Vw will switch the Touareg over to solenoid injectors, if they haven't already or if it's a 2013 development.
I need to see how fuel can get into the cavity that contain the piezo electric discs, and how it can get back to the fuel tank or pump.
Can you post a set of pictures or engineering drawings?
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NewsW
US
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Joined: 02/06/2012
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Those of you out there with the CP 4 Pump... here is the latest twist:
http://forums.tdiclub.com/showpost.php?p=3907598&postcount=3840
Quote:
Quote:
Originally Posted by storx View Post
I just recently installed a fuel pressure gauge in my car because I been wiring up my gauges for big turbo install... I noticed that under full boost at higher RPMs the gauge shows my inlet pressure to Bosch pump was dropping almost in half... I talked to dealership and according to there repair manual it's still within tolerance so I'm ordering a air dog unit pretty soon here...I have a 24valve cummins that suffered from IP failures from low fuel pressure so I'm not taking chances and just adding additional pump to assure solid pressure
Hmmmm... cavitation, if it occurred, could theoretically provoke a failure of the pump's HP section.
This is an interesting possibility....
Cavitation would mean many things, including lack of lubrication.
Note the removal of the coating from one part and not the other.
That can mean the DLC coated parts have different surface tension characteristics with diesel fuel.... or contaminants like water... or...
Summer is nearly over... and I am now sitting around waiting for the failure reports to come in for the next iteration of the analysis.
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