"5.7 Merc MPI's. Starboard
"5.7 Merc MPI's. Starboard engine has port cylinder heads replaced twice, starboard side head once. Now starboard side needs replacement. Both sides done under new boat warranty, second time with @300 hours. Seems like a lot of cylinder head replacements for a six year old boat. Mercruiser doesn't seem too interested. Anybody got any helpful advice on what seems like an on-going problem? I thought these were pretty reliable engines. Anybody?"
"5.7 Merc MPI's. Starboard engine has port cylinder heads replaced twice, starboard side head once. Now starboard side needs replacement. Both sides done under new boat warranty, second time with @300 hours. Seems like a lot of cylinder head replacements for a six year old boat. Mercruiser doesn't seem too interested. Anybody got any helpful advice on what seems like an on-going problem? I thought these were pretty reliable engines. Anybody?"