Should it really be that loud?
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Category: Technical & Model Specific Forums
Forum Name: BMW 6 Series
Forum Discription: This forum will deal with any issues on the BMW 6 Series (E24, E63 & E64)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=27380
Printed Date: 18-May-2024 at 06:11
Topic: Should it really be that loud?
Posted By: Shem
Subject: Should it really be that loud?
Date Posted: 17-February-2006 at 15:11
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Did BMW really sell luxury cars with fuel pumps so loud that you can hear
them dronning whilst sitting in the car? I was getting paranoid that my in tank pump was about to fail as it was dronning like a hornet in a tin can. I also have a lumpy tickover and scanning the america forums suggested that a failed or failing in tank pump can cause lumpy tickover. So I replaced it with a brand new unit from BMW (£147+vat) and guess what? Yep, you guessed it, it's no better than the unit I removed if not even more noisy  and its had no effect on the lumpy tickover.
Surely this is not right? Ps. anyone wana buy a used fuel pump? ------------- What fuel crisis? |
Replies:
Posted By: simonr
Date Posted: 22-February-2006 at 06:46
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My fuel pump has been doing the same thing intermittently for about 3 months. I've yet to replace it as it's not causing a lumpy tick-over. I think the sound is amplified by the fuel expansion tank. I'm waiting for catastrophic failure before I replace it - but I'm interested to hear that it didn't solve your noise problems. Out of curiosity, did you change the gaskets? |
Posted By: Shem
Date Posted: 24-February-2006 at 10:56
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The new fuel pump comes with a main gasket at the top so yes that was replaced, however I think the level sender (which slots into the fuel pump assembly) has its own gasket which I didn't replace. There is a lot of posts on US forums about noisy pumps but I didn't find any clear opinion on whether it meant imminent failure. In my experience its doesn't if a new one is just as noisy!
------------- What fuel crisis? |