FixedWing

I have a metalic noise which seems to be coming from the engine. It is a sort of tinny sound and seems to be most noticable at idle and seems to vary with the RPM of the engine. If I were to guess, I would say it was coming from the middle cylinder on the left bank but I could easily be wrong about that.

Any ideas what it might be?

Stephen

reefer_bob

Have you checked your other wheels?

FixedWing

Hahaha ... Not that. :-pp

Avantgarde

Can you seriously hear middle cylinder of the left bank from the drivers seat...Damn!

lemieux@curbside

any loose bolts or nuts..maybe sitting under the intake ?

FixedWing

No and it isn't the rattle kind of sound. It has a definate rythm to it.

FixedWing

No. It is noticable at idle and above. To me, it sounds loudest with my ear right over that point.

Hibiscus Red S4

Thought it was a heatshield, but they all seem to be ok. Noticeable just above idle, and when "lugging" from 800-1500 or so. Metallic Rattling coming from the middle of the engine bay area underneath.

FixedWing

Quite loud. Easily noticed when idling and sitting in the car. Very noticable standing next to the engine. Obviously RPM dependent and not load dependent.

Really seems to be to be something to do with the upper valve gear.

Oh, and it has got louder and more noticable with time.

Stephen

acd

I just had one of my cam tensioners replaced under extended warranty. Symptoms similar to what you describe -- ticking metallic noise at idle, frequency increased when I revved the engine a bit. Once I got past 1-1.5k RPMs I couldn't hear it anymore. Service folks claim they used a stethoscope type device to determine which bank's tensioner was failing.

Worst part of it all was that I discovered the noise when picking the car up after scheduled maint. Bah. Dealership has had it since the 28th, I'm supposed to get it back today.