Page 3 of 3 FirstFirst 123
Results 51 to 60 of 60

Thread: Fuel pump stuff - seems to be a lot of this going around lately

  1. #51
    Join Date
    Dec 2007
    Location
    orange, ca
    Posts
    2,507
    My Cars
    '91 e31
    My definition of mission creep is having to replace a part I broke to get at different part, and the first part actually didn't need to come off anyway.

  2. #52
    Join Date
    Jun 2008
    Location
    SF Bay Area
    Posts
    3,778
    My Cars
    Supercharged 850ci
    After Walbro install my fuel rail pressure was 75psi lol, after much discussion with cartoonz and testing we determined it was not the FPRs that were being overwhelmed, believe it or not it was a sending units fuel return part.
    At idle it could not flow the volume of fuel being returned to the tank. Solution is simple, drill small hole (smallest drill bit) in the U section of this part. All is good now. Walbro gss 340 is a beast!
    Last edited by dragon850; 10-05-2017 at 12:18 AM.

  3. #53
    Join Date
    Dec 2013
    Location
    San Antonio
    Posts
    712
    My Cars
    850,76 2002 &530,84 633
    Quote Originally Posted by dragon850 View Post
    After Walbro install my fuel rail pressure was 75psi lol, after much discussion with cartoonz and testing we determined it was not the FPRs that were being overwhelmed, believe it or not it was a sending units fuel return part.
    At idle it could not flow the volume of fuel being returned to the tank. Solution is simple, drill small hole (smallest drill bit) in the U section of this part. All is good now. Walbro gss 340 is a beast!
    Is the hole inside the square venturi opening of the U tube?

  4. #54
    Join Date
    Jun 2008
    Location
    SF Bay Area
    Posts
    3,778
    My Cars
    Supercharged 850ci
    Quote Originally Posted by JDP530 View Post
    Is the hole inside the square venturi opening of the U tube?
    marked it.
    sender.jpg

  5. #55
    Join Date
    Dec 2013
    Location
    San Antonio
    Posts
    712
    My Cars
    850,76 2002 &530,84 633
    Quote Originally Posted by dragon850 View Post
    marked it.
    sender.jpg
    Have you had a chance to try out this mod to see if it relieves enough pressure on rails?

  6. #56
    Join Date
    Jun 2008
    Location
    SF Bay Area
    Posts
    3,778
    My Cars
    Supercharged 850ci
    Yes it fixed my pressure in rails. Back to fpr regulated pressure.

    Sent from my SM-G925T using Tapatalk

  7. #57
    Join Date
    Dec 2013
    Location
    San Antonio
    Posts
    712
    My Cars
    850,76 2002 &530,84 633
    Quote Originally Posted by rockytt View Post
    Since everything was in such bad shape, I just bit the bullet for a new assembly from BMW - $540. At this stage, I wanted to introduce as few variables as possible into the mix instead of creating potential new issues. (no shortage of those and kept things as simple as possible)
    rockytt, where did you buy your fuel pump assembly if you don't mind me asking? The cheapest I have seen part is around $640. My pump system and fuel return carrier are so corroded I am not sure they are worth repairing. The left carrier is missing float from level indicator and its also missing the sweeper contact.

    IMG_20171005_143740056.jpg
    IMG_20171005_143702044_HDR.jpg

  8. #58
    Join Date
    Dec 2007
    Location
    orange, ca
    Posts
    2,507
    My Cars
    '91 e31
    Right here

  9. #59
    Join Date
    Sep 2008
    Location
    Santa Barbara
    Posts
    3,462
    My Cars
    91 Dinan860 & 91 850 6sp
    '91 Dinan 860 Stage III (new 6L engine)
    '91 Dinan 850 TT stage III (brand new engine) 21st Century Tech meets 18th Century Dinan...
    '91 850i 6sp (mint) (sold)
    '90 Dinan 750iL TT stage III (Guido - The Beast)
    '94 850 CSi The Detroit Auto Show car (restored to factory perfect) (sold)
    '96 850Ci, The George Carlin car
    ''73 3.0 csi, '08 535i, '03 X5 4.6is
    ...and a few other non BMW cars

  10. #60
    Join Date
    Dec 2013
    Location
    San Antonio
    Posts
    712
    My Cars
    850,76 2002 &530,84 633
    Quote Originally Posted by rockytt View Post
    Right here
    Thanks for the help! Looks like there is plenty of competition around for parts!

Page 3 of 3 FirstFirst 123

Similar Threads

  1. I was greatful to be a part of this.
    By OUTLAW840ci in forum 8 Series (E31)
    Replies: 0
    Last Post: 09-18-2009, 08:49 AM
  2. Replies: 4
    Last Post: 04-24-2008, 01:37 PM
  3. This weekend is going to be a lot of fun...
    By Nemesis519 in forum Georgia sponsored by Harrison Motorsports
    Replies: 5
    Last Post: 01-15-2007, 10:58 PM
  4. Fan seems to be throwing lots of air...
    By dy540i in forum 1996 - 2003 (E39)
    Replies: 7
    Last Post: 09-16-2005, 02:27 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •