2003 Mercury 200 EFI Saltwater Motor
by Keith Taylor
(Broken Bow oklahoma )
Start and idles great ! It will die running full speed or some time it die when exhilarating hard. But it always restart. We have check fuel pressure on plane. It stay constant no fluctuations! Also replace all flue line and bulbs .replace all fuel fitters. We thought it may be electrical so we replace the key switch. No problems there ! Replace all spark plugs and checked compression all cylinders are between 125 and 130 . We have tried putting additives in the fuel to clean the injection system didn’t help ! It still runs and die running at full speed ! Could this be fuel related or would it be the brain or electrical problem?
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