EFI knocking or loud ticking from EFI plate 1996 Mercury 250

[fclay54]

EFI knocking or loud ticking from EFI plate 1996 Mercury 250
Is this normal or is there moving parts inside EFI cover? Thanks

[boats.net]

No knocking is not normal, not sure where exactly you are hearing noise but run a compression test to see if all cylinders are even, look at spark plugs to see if all are burning even. If it's an OPTI model check air compressor.