Do the Merc 4 strokes like to be vented or no venting?
Do the Merc 4 strokes like to be vented or no venting?
Everything that I have read says keep all holes plugged. I have one myself and keep all PVS holes plugged.
4 strokes develop their torque at lower rpm than a 2 stroke, so generally there is no need for removing plugs.
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