Surface Interval wrote:
My '95 190 did that sometimes when warmed up after several seasons of use. I understood that it was gear backlash in the upper end of the outdrive. The engine, drive coupler, and greaseable driveshaft u-joints were good.
I remember the 190 my family had as a kid growing up did the same thing! It was also a 95 with the OMC Cobra 5.0 EFI.
The way I see it is it's like clutch chatter in a car - some do it more than others. My tow vehicle doesn't do it much, but my Cobalt SS sometimes chatters and makes the same noise in neutral. You can usually get it to go away by pressing in the clutch and letting it out slowly, which would probably be the same as going into gear and back into neutral again, where the noise sometimes goes away.