Chris St.Clair
Recruit
- Joined
- Oct 3, 2003
- Messages
- 5
I just bought a 2001 Mercury, 200hp,25 inch shaft, saltwater, carburated motor. It has been rebuilt so I had to do the double oil break in deal for the 1st 10 hrs. It ran fine for the 1st 8 hrs. and then I started hearing a clattering noise that I thought was coming from the lower unit. It does not do it during acceleration. Only when cruising or when slowing down. The shop where I bought the boat says it is deceleration knock and that it is common. If so why did it not do so for the 1st 8 hrs. and won't it damage the motor eventually. Any info. on the subject would be appreciated.
<br />Texas50