Tensioner Pulley Noise

[Steve]

We have a QSB 5.9 425hp. I was doing a fresh water flush when I heard a wine coming from the tensioner pulley. The belt tension looked fine so I sprayed some T-9 into the pulley and the noise went away. Is this a legit solution or should I be ordering a new belt tensioner because mine is on the way out?
Thank You, Steve

I attempted to upload a photo of the tensioner pulley but can’t seem to get it through.

Topic

[Rob Schepis]

Thanks for posting the outcome Steve.

[Steve]

My belt tension looked fine so after consideration, I went ahead and replaced the tensioner pulley. It was an easy fix. No more whine and no concern it may come back.

[Mike Mason]

make sure there is enough tension on the belt as well. i had a similar issues and tightened the belt. all good now

[Steve]

I’m still struggling with uploading the picture but the tensioner pulley I’m talking about is to the raw water pump. I have the old style.

[William Walter]

Noise

Steve I had the same problem and did the same thing. Unfortunately after most of spray come off the bearings the noise came back. Give it some time and monitor. If the pulley is bad it will start squealing again. Bill

[Author]

Replies