Sound from engine bay

primetime · #1 05-10-2008, 12:26 AM

My X is making a rattling bag of marbles type sound when idling. It drives fine but when I have the engine on there is a rattling type sound like a bag of marbles being juggled around. The sound is coming from the engine bay. What could it be?

Sponsored Links

primetime · #2 05-10-2008, 11:30 AM

Anyone ?

ih82lose · #3 05-10-2008, 11:37 AM

Could be the vanos. Is the sound coming from the front of the valve cover?

primetime · #4 05-10-2008, 11:42 AM

its definitely coming from the front of the engine somewhere, I can't pinpoint it though...Its loud when idling and sounds like a bunch of marbles are being juggled around...

mrbmwx5 · #5 05-10-2008, 11:45 AM

Primetime! it need valve adjustment and it costly $$$ some where about $1200. job.

primetime · #6 05-10-2008, 11:46 AM

Quote:

Originally Posted by mrbmwx5

Primetime! it need valve adjustment and it costly $$$ some where about $1200. job.

How can you be sure?

mrbmwx5 · #7 05-10-2008, 11:48 AM

i had the same noise and have ask my dealer about this and have it done to my E46 330ix before.

primetime · #8 05-10-2008, 12:54 PM

The sound is coming from the fan/radiator area. The front of the engine bay for sure...But the fan blows fine, my heat/ac works fine....Normal driving works fine, gas mileage is the same, and my rpm's gauge don't jump around when i'm sitting at a stop light either...

blueagle · #9 05-10-2008, 01:01 PM

Just a guess but check your engine supports. This can be a factor in eliminating or reducing the rattling sound of your engine when idele

motordavid · #10 05-10-2008, 01:30 PM

Could be a bad fan/fan mount or bely pulley or
belt pulley idlers or...
Hard to diagnose from reading. Imo, a "valve adjustment"
is way down on the list of things to worry about.
GL,mD

Sponsored Links