Leaking gasket sound. Much more prevalent in colder areas. Like a bugle but quiet under the usual engine sound.
34 540 with M60 and 5HP30 transmission, the owner thought the noise comes from the 5HP30 transmission, maybe too low ATF or defective o-ring on the trans filter.
https://www.youtube.com/watch?v=RgqX...ature=youtu.be
https://www.youtube.com/watch?v=alFa...ature=youtu.be
Then someone told him: when this noise comes, remove the engine oil filler cap slightly, if then the noise is gone and there is a slight vacuum which pulls the filler cap on the valve cover, it is a defective PVC crankcase vent valve oil separator. This was confirmed to him also by a specialist from ZF, no problem with the trans. PCV Crankcase Vent Valve Oil Separator defective.
Leaking gasket sound. Much more prevalent in colder areas. Like a bugle but quiet under the usual engine sound.
95 E34 530I V2.37
===========
Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy
Hahaa! From our Dutch E34forum.
We thought torque converter as the poster was hinting at gearbox trouble.