Here's a little update. Pulled heads and head gaskets appeared good. No visible cracks or abnormalities to block or heads. Block surface flat. Had heads done and no obvious problems. Machinist stated valve guides were actually a little tight and guides were reamed.
Hi,
I'm having some issues with my motor. Below is everything done so far. Looking forward to your help.
2003 4.3 MPI Mercruiser
Seawater and Closed Cooling
Boat runs in fresh and salt water. After running in salt water always flushed for 10-15 minutes with fresh water and Salt Away.
While...