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    5.0 carbureted mercriuser eratic tach with engine miss

    My buddies sea ray 230 runs almost ok. It sounds like a cylinder or two missing. Top speed 37. Top rpm maybe 3700. You can put boat in neutral and get a smooth tach reading over 4k. Engine sounds ok. Run the boat under load and you get an erratic tach. The tach is varying 1500 or so rpm while...
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