Hey how is everyone? So i have a 1994 150hp merc and when shifting from nuetral into reverse or in to drive there is a loud grinding sound but i wll go into gear when we heard this me and my dad decided to turn around cause whatever it is we could be making it worse so we take back to marina a mechanic told us that mercs tend to louder then most engines and that its normal but he said it sounds like its ildeling to high so to be safe we had him look at it. So i was justw ondering if this is normal or do we have a problem sorry for writing so much thanks