I have a 1988 200HP V6 "Precision Blend". I bought it last year, and have been pretty satisfied, with just a few overheat issues (largely solved after replacing impeller and poppet valve).
Lately, I've noticed a sort of "clunking" noise when I begin trimming down when the engine is fully or near fully trimmed up. It just clunks once right at the start of the downward trim.
I'm sure someone here can tell me what that is.