Excessive engine noise

[pierre30011]

2016 F-175 after running motor for an hour or so the engine starts to make a “whirring” noise no matter if it’s in gear or neutral. Have had this issue checked out by 2 different “Yamaha certified shops” & both said they could find nothing wrong. Any ideas?

[pstephens46]

2016 F-175 after running motor for an hour or so the engine starts to make a “whirring” noise no matter if it’s in gear or neutral. Have had this issue checked out by 2 different “Yamaha certified shops” & both said they could find nothing wrong. Any ideas?

Video/audio needed....

[TownsendsFJR1300]

Mid section bushing on drive shaft needs GREASE.

Yamaha waterproof grease to be exact..


When was the last time the water pump was done?

[pstephens46]

Why speculate at this point?

[robert graham]

Don't those bushing usually make a squealing/chirping sound when under-lubricated?......

[TownsendsFJR1300]

Don't those bushing usually make a squealing/chirping sound when under-lubricated?......

Mine chirped at lower RPM's but I had grease on the shaft, just not the correct grease.

We don't know what service has been done, or not done at this point to the engine.

I would think a belt tensioner, etc, wouldn't fail this quickly and even if it did, a decent mechanic should be able to find that.

Agreed an audio/video would help a lot but seems the op disappeared..