Mariner F20 ELPT EFI 2020.

by David Segal
(Poole, Dorset. UK)

This engine was brand new, ran well for a few weeks then tragically got an overnight dunking in the sea when the boat it was on sank. Stripped it right down, washed it all. Replaced the oil twice, fuel system, plug filter etc. Started fine but the oil warning light did not go out although it ran. Checked the oil pressure and sensor and seem fine.
Talked to the supplier (200 miles away) who suggested it might be the CDI unit. I bought a new one and fitted it.
Engine still starts fine and oil light goes out a bit more now but above half revs the engine gets very lumpy.

Run out of ideas. Any suggestions please.

Dave Segal
Poole, Dorset, UK

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