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#11
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#12
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Quote:
And that's about my mileage too (currently at 132,000m) - but I'm hoping the higher lubricity of diesel fuel means that us oil burners see more service from the fuel pumps. I guess time will tell....
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#13
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^BMW pumps have a potential failure of the pump after 100,000. Pretty much regardless of chassis. The few pumps I have had to replace have been 120,000 and 150,000.
Being a fellow diesel X5 (e70) owner... I am willing to buy into your premise the oily stuff will help our pumps last longer.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#14
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Don't want to start a new thread so apologize in reviving an old one. Just want to have folks here to consider getting genuine BMW part if budget allows it.
The original pump went out (@173K) so I replaced it with Delphi one. It says Delphi is OEM but unfortunately, mine only lasted 39K miles (@212K). Car broke down and have it towed back to my house. Few things to add
I should be getting the new Genuine BMW part sometime next week. Got the new pump from the company that provides the lifetime warranty. This is just my experience with Delphi. Others might have better luck but with the amount of miles I do, maybe fuel pump is not up to the task. Car: 2001 BMW X5 3.0i w/manual transmission |
#15
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“Never lower than 1/4 tank” is not a good thing. You have to occasionally go lower to confirm your siphon jets are functioning and there is zero benefit to the electric pump. Once you are below about 1/3 or 3/8 of a tank there will only be about 5l of fuel in the right side of the tank.
I bought a knock off pump that only lasted 10 months but since it was warranted I replaced with the same and it’s been working ever since. I thought the pump died so I bought a Bosch and discovered it was the fuel level sensor that was whacked and just fixed that (wrote a DIY). While you have the back seat off, check your siphon jet o-ring since they tend to fail about 140,000 miles
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#16
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Thanks andrewwynn for your input.
I included the 1/4 tank statement to convey to everyone that lack of fuel level did not contribute to premature failure of the pump. Its confirmed pump is bad since I have it out and applied 12V directly on the +/- terminals . . . nothing. I do check the OBC cluster for fuel on both sides of the tank. So far, siphon jets seem to be working. About the O-Ring, is that the one around the opening? Is it the same size as the O-ring on the pump itself? If it is the case, the new pump comes with O-ring. I will use the "newish" o-ring from the failed Delphi pump. Last edited by chedeng; 01-16-2020 at 01:16 PM. |
#17
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I’ve only ever reused the main tank seal. Put it into the tank first before reinstalling pump.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#18
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Quote:
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2004 4.8iS Check out the BMW CCA X Chapter on Facebook - https://www.facebook.com/groups/603822583674050/ |
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