In-take "pop" sound..

[KillerJim]

I'm curious to what causing a sound I've heard both in my Sagaris and T350.

It sounds like a large amount of air is "popped" out of the in-take, it happens mostly below 60c oil (below 3000rpm as she is "cold") with medium throttle.

The engineer in me would love to know the reason behind the sound

J

[KillerJim]

Thanks, will take a look but the local servicer will be doing the balancing!