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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 06-29-2012, 11:43 AM
traviss351 traviss351 is offline
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Location: ohio
 
Join Date: Aug 2011
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Mein Auto: 2002 z3 roadster
fuel leaking from fuel filter hose ..2001 525i

i replaced the fuel filter on my 525i....also replaced the old rubber fuel lines and hose clamps.....6 months later the rubber fuel line started leaking at the filter so i tightened it up ....two weeks later it started leaking again ...i took it in the garage and let the car run for 10 minutes while watching the line ...no leak!.......it wont leak all the time....anyway tightened up the line some more ......now 6 months later it is leaking again....pulled it in the garage and not leaking .......anyone had this problem .....i cant tighten the clamps much more or they will cut through the hose ......thinking of using a new hose and different style of clamp.....its almost like the pump is putting out a crap load of pressure at times.....causing it to leak .....any ideas would be great!!!!
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  #2  
Old 06-29-2012, 12:23 PM
mifesto mifesto is offline
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Mein Auto: m3
i am curious, did you use unleaded gas rated rubber lines? i have seen people use things like standard rubber hoses or fuel lines meant for leaded gas which will degrade with standard unleaded pump gas.
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Old 06-30-2012, 09:40 PM
traviss351 traviss351 is offline
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Mein Auto: 2002 z3 roadster
I got the fuel hose from advance so i would assume it is the right hose......? ??
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Old 06-30-2012, 11:50 PM
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chiefwej chiefwej is offline
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Mein Auto: 2003 540i/6 //m-tech
What kind of hose clamps did you use? There are ones that are specifically designed for high pressure fuel lines.
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  #5  
Old 07-01-2012, 05:50 AM
Axialflow Axialflow is offline
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Mein Auto: 525i 02
If your hose is too big it wont seal. Should be a tight fit
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  #6  
Old 07-01-2012, 01:51 PM
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540 M-Sport 540 M-Sport is offline
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Change the hose clamps immediately! Use only high quality ones...Wurth are good, but there are several other good brands....don't use the crap at OReillys, Pep Boys or AutoZone...find the good imported fromGermany ones. For most jobs, it is worth it to simply use new clamps each time
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Old 07-01-2012, 04:57 PM
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Jason5driver Jason5driver is online now
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Mein Auto: E39 hamster w/ pin-wheel
Napa should have the correct fuel hose clamps.
Also check AutoHausAZ and EACeuroparts.

http://www.autohausaz.com/search/pro...2@Hose%20Clamp

http://www.autohausaz.com/search/pro...el%20Hose/Line

http://www.autohausaz.com/search/ima...0019976990.jpg


Thanks!
Jason
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Last edited by Jason5driver; 07-01-2012 at 05:02 PM.
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Old 07-03-2012, 09:40 PM
traviss351 traviss351 is offline
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Mein Auto: 2002 z3 roadster
Thanks for the info.......going to replace hose and get higher quality clamps
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