96 lower unit noise

motleycrue

Recruit
Joined
May 20, 2008
Messages
3
Hey all,

I have a 96 175 that came on an Overnighter I bought. As I didn't know the engine and bought it in the fall I had a new water pump installed when it was winterized. When I dumped it in the drink it made this horrendous noise which sounded to me like it was coming from the lower unit. This noise is in forward and reverse in clutch gear only, or at least it seems to go away when you get over 1000 rpms or so.

She ran fine all year despite sounding, well, like hell!
(Well, except for seeming to gum up carbs).

Had the shop look at it again and tell me it was one thing, then another guy said it was in the powerhead itself and what I heard was piston slap.

Do you think this could be the wave washer as Rodbolt had suggested in one of his prior posts about another engine? Again, it didn't do it during sea trials before I bought the boat, only after they changed the water pump. Is this harmful?
 
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