Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) Forum
Bimmer Tool Rental
User Name
Password
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


Reply
 
LinkBack Thread Tools Display Modes
  #11  
Old 03-26-2019, 08:04 AM
Member
 
Join Date: Nov 2015
Location: North Carolina
Posts: 17
1mGator is on a distinguished road
Smile

Quote:
Originally Posted by ard View Post
Just thinking out loud....


A diesel high pressure fuel pump, is running and pumping fluid under tremendous pressure into a dynamic system which has 6 'outlets' (fuel injectors)


As it runs, at speed, you get a nice rhythmic pulsing- fluid enters, fluid exits...everything is happy. Pump spins... every 40 usec a pulse happens.



But then one injector takes a crap. AS a result, the nice "every 40 usec" rhythm is interrupted.



Does this result in a odd 'torsional vibration' in that fuel pump??


Id replace #6.





Thank you - it’s looking like that may be the culprit - hard to be sure as the codes at times seem to be “guidelines” versus exact
Reply With Quote

Sponsored Links

  #12  
Old 03-26-2019, 11:54 AM
sunny_j's Avatar
Member
 
Join Date: Dec 2007
Location: vancouver, canada
Posts: 133
sunny_j is on a distinguished road
I checked the resistance on 6 injectors and 5 & 6 were out of spec. I replaced both because the partitions broke and flooded those injectors
__________________
2012 X5d | White on Black | Sports Package | EGR/DPF/SCR Delete with Buzzken DOC Downpipe and JR Stage 2.8 Tune
Reply With Quote
  #13  
Old 03-26-2019, 01:07 PM
Member
 
Join Date: Jan 2018
Location: NY
Posts: 28
Dieselfan is on a distinguished road
Quote:
Originally Posted by ard View Post
Just thinking out loud....


A diesel high pressure fuel pump, is running and pumping fluid under tremendous pressure into a dynamic system which has 6 'outlets' (fuel injectors)


As it runs, at speed, you get a nice rhythmic pulsing- fluid enters, fluid exits...everything is happy. Pump spins... every 40 usec a pulse happens.



But then one injector takes a crap. AS a result, the nice "every 40 usec" rhythm is interrupted.



Does this result in a odd 'torsional vibration' in that fuel pump??


Id replace #6.





I concur!
__________________
10 X5 35D
02 530 SC
01 330XI
97 528
04 POS Chebby S10 Crew
Reply With Quote
Reply

Bookmarks

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 02:05 PM.
vBulletin, Copyright 2019, 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.