I have a 1997 Merc 5.7 LX 4 bbl. The issue is that 2 starboard side cylinders seem to be dead! The plugs are new and are only wet with fuel. The engine will idle fine, but under load bogs down. The cap and rotor were replaced last season, however the wires are at least 8 years old! I know, its boat abuse. I did rotate and replace the plugs with no luck. New wires will go in tomorrow. Am I on the right track? Or do you think I have bigger issues. The engine only has 300 hours on it and it ran fine in the spring before being winterized.
Its the 1st two from the front if that helps.