View Full Version : E34 vacuum leak?

04-10-2005, 01:37 AM
I got my 535i out of storage last week and i started hearing a humming sound when the car is at idle. When the rpm's get up it stops. I opened the hood and could not hear the hum and i believe it is coming from the area under the drivers seat. I have not noticed anything else odd and i think it could be a vacuum leak. Anyone else have any ideas or suggestions?

04-10-2005, 05:37 AM
hissing noise? I have it too, some say its signs that your fuel pump is going to die.

04-10-2005, 04:00 PM
Ill be sure to get that checked out. Thanks for the help!