Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
User Name
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management

LinkBack Thread Tools Display Modes
Old 09-02-2021, 05:49 PM
wpoll's Avatar
Join Date: Sep 2015
Location: South Island, New Zealand
Posts: 4,624
wpoll will become famous soon enough
Originally Posted by Clavurion View Post
... Correctional values (smooth running control) tells more about the condition of injector nozzle (fuel atomisation properties).
So an injector could be leaky but the Selective Mass Adjustment values would not show that. Good to know.
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
Reply With Quote

Sponsored Links

Old 09-02-2021, 06:04 PM
Join Date: Jan 2013
Location: Finland
Posts: 1,373
Clavurion is on a distinguished road
Originally Posted by wpoll View Post
So an injector could be leaky but the Selective Mass Adjustment values would not show that. Good to know.
Yes. They don't have direct correlation. The leak in this case is to leak off line, not in cylinder. There is some leak off due to working principle of common rail diesel injector. If the internal teflon seal between injector body and needle fails some of the high pressure fuel leaks to leak off side. First this will show as a slower start and eventually it can prevent engine start because required fuel pressure is not met. In some rare cases this can also stall engine on high load because of too high discrepancy between rail pressure demand and true value.

Poor correctional value will show as uneven running characteristics on idle and low RPM.

On attached picture quite typical failed teflon seal.
Attached Images
E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
Reply With Quote


cranking, intermittent, issue, m57

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 12:58 PM.
vBulletin, Copyright 2024, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.