Re: 120 LD90c force in a 1991 bayliner
Gasket not installed right or the head is warped.Or the bolts not tighened in the right sequence.What did you tourqe the head bolts too? 20 ft#
Take it off and check the gasket.
Put the head on a piece of glass and see if there are any high or low spots.Take the glass and check the block for clearance.