This is a sea trial of a Yamaha F350 outboard engine. There was noticible bearing noise heard from the port outboard engine. Upon removing the upper cowling the bearing noise could clearly be heard in the starboard bank in the cam shaft (part of the valve train). A leakdown test should be conducted and removal of the valve cover should be done to visually inspect the cam shaft, bearings, and oil passages in that bank. Come see more about my company at: http://www.SuenosAzules.com
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