I have a 1987 K75C that has a high pitch whine. I have read on a website where a K75 sounded like the Jetson's cartoon hover car, or a jet engine. Mine sounds very prominent like this. I have a 1987 K100LT that has a barely noticeable whine.
I have heard that the 75 whines more than the 100. This is a lot more.
Is this normal? Alternator bearings bad?