Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E65 / E66 (2002 - 2008)

7 Series - E65 / E66 (2002 - 2008)
Discussion of BMW's 4th generation E65/E66 7 Series flagship. The E65 generated much controversy, due to its radical styling and iDrive user difficulties. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2005 facelift.

Thread Tools Display Modes
Old 05-27-2015, 03:03 PM
V12seven V12seven is offline
Registered User
Location: Hermosa Beach CA
Join Date: Jul 2013
Posts: 27
Mein Auto: 03 BMW 760Li
HPFP date & diaphragm question

I'm in the process of a minor overhaul, 94,000 miles on my 2003 and cleaning out the grunge on the intake valves and ports. I've replaced the diaphragm in the left side pump twice, 1st time was in the summer of 2013 and it lasted about a year. I did the same again and decided to take a look inside, it looks like its beginning to fail, so I'll be replacing it with the magnafuel 9400. Seeing as the engine is apart, I figured I'd take a look at the right side pump, it's never ben out. The sides of the pump look beaten up and it was difficult to read the serial #'s but a lot easier looking at the picture. It looks like I have a November 2007 on right side and January 2003, (original) on the left. My left had 2 diaphragms and the right has only one. It has been my thought all along that there is only supposed to be one and that if you have 2, it was a quick fix by the Stealer. I still had a factory warranty when I purchased and have a document relating to repairs to the problem pump. The repairs were done just prior to my purchase, so it looks shady. Also it looks like later model pumps have a brass bushing at the top of the pressure balancing spring, only one of my pumps has this.
For all of you that have done your own pump work, can you post pictures of the pump sides, date of your car and how many diaphragms you found. I think we could get a good picture of who's pump has been (fixed up), or replaced and maybe expose unscrupulous dealers.
I'm writing BMW regarding dealer supplied replacement diaphragms, however, I don't expect miracles.
Attached Thumbnails
Click image for larger version

Name:	IMG_0968.jpg
Views:	40
Size:	150.3 KB
ID:	511487   Click image for larger version

Name:	IMG_0969.jpg
Views:	41
Size:	154.9 KB
ID:	511488   Click image for larger version

Name:	IMG_0970.jpg
Views:	40
Size:	108.5 KB
ID:	511489   Click image for larger version

Name:	IMG_0971.jpg
Views:	40
Size:	130.9 KB
ID:	511490   Click image for larger version

Name:	IMG_0974.jpg
Views:	58
Size:	107.7 KB
ID:	511491  

Click image for larger version

Name:	IMG_0975.jpg
Views:	39
Size:	173.7 KB
ID:	511492   Click image for larger version

Name:	IMG_0966.jpg
Views:	45
Size:	137.4 KB
ID:	511493   Click image for larger version

Name:	IMG_0967.jpg
Views:	42
Size:	116.4 KB
ID:	511494  
Reply With Quote

See More Related BMW Stories

Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E65 / E66 (2002 - 2008)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -7. The time now is 11:59 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms