[QUOTE]Originally posted by sixto
The bleed ports are on the cylinder head just inboard of the dipstick handle. There will be 2 14mm head screws or a 14mm head screw and a temp vacuum switching valve.

Sixto,
I have the same "noise" on my 260E ,1988, I have difficulties to understand the location you describe, have you any photo or drawing of that?

thanks for help