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      02-21-2006, 03:56 AM   #1
ages944
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Drives: E90 325i
Join Date: Dec 2005
Location: Chicago 'burbs

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Metallic Ticking noise coming from engine?

Hi all,

Last week I noticed that my car's engine started to emit a metallic ticking noise while it was running. The noise seemed tied to the engine RPM, in that it would get faster / slower depending on the engine's speed. The noise is intermittent, and I haven't heard it in a couple of days. Has anyone else heard anything at all similar to this in their cars? Does anyone have an opinion to what it might be? I'm taking the car into the dealership on Thursday, but I'd like to have some idea of what might be going on first.

Thanks in Advance!


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Update: 6/30/2007

I was perusing the net a couple of days ago and came across some great images of the N52 engine. Here are a couple that I downloaded that show the parts that cause the tick. I modified the first picture to clearly show the valve lifters.


1. Diagram showing the valve lifters
Name:  ValveLifter_Diagram.jpg
Views: 202375
Size:  68.3 KB

2. Engine cutaway view showing valve lifter position
Name:  014.jpg
Views: 181494
Size:  81.5 KB

3. Engine cutaway view showing valve lifter position
Name:  015.jpg
Views: 177727
Size:  86.7 KB

Last edited by ages944; 06-30-2007 at 01:20 PM. Reason: Updated - 6/30/2007