vibration at 2000-2500 rpm

[rs1lollie]

I have a vibration at 2000-2500 rpm trimmed all the way down, it smooths out over and under those rpm's, and when i full turn, i feel i also feel the vibration...
Boat is a 1998 Four Winns Horizon RS 180 Volvo 4.3gl with sx out drive.. wondering if its u-joints , gimbal bearing or prop...

 

[Chris1956]

This is best posted in the correct I/O forum. Likely U joints, but just a guess.

 

[GA_Boater]

In the V-P section now and the other post has been deleted.

 

[Augoose]

Any noises accompanying the vibration?

 

[PatinIdaho]

With out being there to check it out my bet would be Gimbal Bearing/U-Joints or a combo of the two.

 

[rs1lollie]

Any noises accompanying the vibration?

none that I hear, just vibration noise. I do hear some kind of faint knock every so often when at idle on the muffs. new jasper motor long block with about 10 hrs on it.

 

[Augoose]

Of course noises and vibrations are tough to explain, especially in writing and not in person. Who does your service? When was the outdrive last pulled and the gimbal and u-joints inspected?