1987 CC Stinger, twin 260hp sbc omc cobra.

Second shake down for this year, first time thought I heard a knocking. Took it out again to see.

Went to back into a channel and I could not back the boat to the starboard with the starboard screw. Knock knock knock knock knock could be heard. No serious vibration, drive shifted normally. Engine runs normally.

Ran it back to my slip and before I tried to dock I tried out in the channel. No backing to the sb with the sb. So I took that one out of gear and docked it on the port. No problem turning with the port.

Thoughts? U joint? Gimbal?

I had to wait until later today or tomorrow to pull the boat from the slip.

Only symptoms are the knocking and the loss of steering on that side. No fluid loss inside or out. Knocking is not engine.

BTW... thanks in advance for input.

loose nut behind the wheel...better?

You a funny funny man Rob.

But no jokes without serious suggestions.... a man has a broke boat over here.

I cant get serious, I was serious on another thread and I was told I was jealous and stupid

as for your boat, generally u joints will start making noise when shifting first, it shouldnt only do it reversing, if you can grab it see if there is play side to side, being as you have screws, the angle wont change like on a trimable drive.

Yeah... I will play with it when I get it home. Was just looking for some ideas. Wondering was driving me nuts.

Whoever called you jealous and stupid just doesn't know you very well. Don't let them bother you. We all know you aren't jealous.

This is not going well. I will not play with it when I get it home. I will check it.

Dam Rob,

Now nobody is making any guesses.

My guess is that the tiller arm for the outdrive has come loose inside the boat and the outdrive has turned further than normal causing the u-joints to complain

I didn't check that. It was getting dark.

That's a good thought.

The u joints (joint) only complained when the wheel was all the way to one side at first. Then they (it) would complain any time the wheel was not directly forward. I get the sense that the problem is SB only not port. I was able to make a normal turn in reverse in the SB direction using only the Port drive when I backed in to the slip. Going bow-in would have been too easy.

Thanks Mark... we shall see.

Keep em coming.