I have a bit of a noise going on in the motor compartment. Let's see if I can discribe it. First off it's a 300 Turbo bet that will help.

Sounds like valve train noise or maybe a pinging. I noticed it at around 65 MPH (2400 to 2800 RPM) with no load. What I mean by no load is that I'm on the flats. If I decellerate or accellerate the noice goes away. I can only hear it with the windows rolled up. It's almost sub-audible. Kinda like a high RPM nailing. Almost like playing cards in the spokes of a bicycle (Now I'm really showing my age).

Any ideas?

__________________
1984 280SEL, 62,000 miles
Euro model in the USA
1983 300D (Totaled out 10/2004)
New Factory Mint Green paint
Palomino int
1982 240D (Steak dinner for two)