Hi All,
Back with another never ending problem. Took it out Saturday. All was sounding great. All indicators were good (engine temp, oil pressure) on both engines. After about, maybe 30 minutes, I noticed starboard side, oil pressure dropped from 1/2 indicator to 1/4 indicator. Everything still sounded fine and functioned fine, so I returned back to dock to not do any damage in case there was some serious problem. I was not sure if it was just the dash board display. But got side tracked and did not restart the engine after docking to see if it would pop back to normal. Anyway, then I proceeded to change oil on both engines, as it was on add mark. yes I had neglected changing timely matter and checking. after changing oil and filter (correct oil and filter as recommended by mercruiser ), I started the starboard engine, at least attempted. nothing happened. did not turn over. when i listened i the engine room, there was a wining, ticking noise. after a friend of mine checked around, notice sound and vibration was coming from, i believe fuel pump. see picture attached. I had the fuel pump replaced 8/2016. did not put that much time between than and now, so not excessive used, I suspected oil pump, or oil pressure switch or something. I will talk to my mechanic tomorrow, but any ideas from anyone here, what it may be. by the way port engine, oil change was success, all worked, and that's my usual troubled engine. thanks in advance for your input. also this is a mercruiser 7.4 mpi. 200 model.