MerCruiser Starboard Cylinder Head Removal The next step is the MerCruiser Starboard Cylinder Head Removal. Up to this point I have Drained and Oil, Cooling system , Done a Leak down test, removed the Starboard, exhaust Manifold, Port Riser, Starboard Riser, Upper and Intake Manifold. Nothing is Evident, that is why we are removing the Starboard Cylinder Head The basis of the original hypothesis of why there is so much…