M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine + Driveline => Topic started by: sopicki on May 13, 2018, 11:16:10 AM
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Hi all,
Thought I'd share something I just learned for those with a similar problem.
My car started to hum a couple of years ago. I was able to track this down to the fuel system as I could feel a definite vibration from just about any fuel line. I immediately thought it was the generic AutoZone fuel pump that I had recently bought for it so I quickly sourced an OEM VDO pump with no change whatsoever. (on a side note, when I removed that AutoZone pump I discovered that it too was a VDO pump!)
Nothing seemed to run badly so fixing the hum was not a real high priority, but by this spring I was starting to get annoyed by it so while ordering parts to track down some other problems I decided to replace the fuel pressure regulator.
Replacing the regulator is pretty easy and I replaced it with a BWD part from O'Reillys. Totally fixed the humming and I think it idles a little better now too!
Just food for thought for those out there with musical cars!
Regards!