Should it really be that loud?

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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?

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Shem Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 04-November-2005 Location: Hampshire Status: Offline Points: 51	Topic: Should it really be that loud? Posted: 17-February-2006 at 15:11
	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?

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simonr Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 31-October-2005 Status: Offline Points: 54	Posted: 22-February-2006 at 06:46
	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?

Shem Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 04-November-2005 Location: Hampshire Status: Offline Points: 51	Posted: 24-February-2006 at 10:56
	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?