2012 merc 150 4-stroke fuel pressure problems

by Ferg
(Yorkton, Sk, Canada)

spring 2016 start up motor started perfect, idled perfect but choked and coughed at any thing over 2000rpm. Dealer replaced the fuel pressure regulator. Work great that season and the next bringing us to this springs start up. Same conditions and when I talked to him he didn't think it could be the regulator again.


Does anyone know if this motor has an issue with the fuel parts and system or is there something else to look at.

low pressure fuel filter changed.

any ideas appreciated

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