One thing I notice about my old 5k and my new 200q is they both "squeek" when running. It's not a belt noise, I know that...I used to take it as a signal from my 5k that it was getting low on oil, and after some fresh oil, the noise would go away. Frustrating as ever. I like engines that don't make weird noises when idling... My chief suspect is the PS pump...? Brett