10 second video of motor sound - Anyone have any ideas? Yamaha F115

Joined
Oct 20, 2025
Messages
1
Hey fellas,

I have a Yamaha f115 (2005) that I love, only 260hrs, it has started making a sound at idle that I cannot diagnose:

The sound kicks on periodically, I only notice it at idle, and it must be a system or part that does not run constantly when motor is on. Meaning it is cycled on and off by the motor.

I think this because it routinely makes the sound for about 10 seconds and then stops uniformly. Then about ~30 seconds later it repeats. And so on.

Any ideas?
Thank you all!
 

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Grub54891

Admiral
Joined
Jun 17, 2012
Messages
6,354
Pull the lid, listen to the sound with a stethoscope ,broom handle, or chunk of hose. Listen at various parts of the engine.
 
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