loud vivbration noise

Joined
Aug 4, 2005
RO Number
18574
Messages
80
hello all, I have a mercruiser 3.7 litre with alpha one leg. When driving the boat I hear a nasty vibration sounds like metal rubbing on metal constant noise. However when I trim up or down to a certain place the noise will die down or increase depending. Also when I turn the sterring wheel to turn the noise will increase again. Any ideas, i think the noise is coming from the leg but not sure.
Cheers Keith
 
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