Mercury 4 stroke outboard running rough. Motor May Run Rough, Sputter, Or Stall: According to a group of Mercury Pro XS outboard motor users, sometimes the motor gives a hard time by constantly sputtering or stalling on idle. My manual says to check and replace (if necessary) low pressure fuel filter every 100 hours or yearly, and to check and replace high pressure in-line fuel filter every 300 hours. It seems that sometimes I would start the motor and I was missing on a cylinder, very rough with no power. In this article, we’ll explore some of the possible causes and solutions to help you get your outboard running smoothly again. Jul 23, 2022 · 3 Common Mercury 4 Stroke Outboard Motor Problems: 1. Still consider myself a " Marine Apprentice " after 48 years (learn something new every day). Jul 3, 2022 · Dual Mercury Master Technician - for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC. Always add marine fuel stabilizer and recently added Mercury Quickleen a 2005 Mercury 60-HP FOURSTROKE Runs Rough, Stutter, Quivers, Quakes, and Shimmies - Moderated Discussion Areas Hop to: Jun 4, 2023 · The 90 HP 4-stroke Mercury engine is one of the popular choices among boaters looking for an efficient, reliable, and powerful engine for their vessel. Mar 11, 2025 · This section will help you troubleshoot performance problems such as loss of power and rough idling. Float was replaced by dealer per a bulletin. bk nbos pnc 6vc vxlgj hv4o kyi cm cdet6y os9fj2mn