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hi


You are replying to:
Juhas
Posted 9/22/2019 9:28 AM (#947117)
Subject: Motor Misfire




Posts: 430


2012 Merc 90 hp 4 stroke.
So couple weeks ago motor seemed to idle rough and felt like a misfire at lower speeds but accelerated fine and ran fine at top speed. Added fresh fuel and some seafoam ran good next day.

fast forward two weeks and noticed rough idle every once in a while.

Also noted that the last bunch f trips took longer to start different times of the day.

Never had plugs changed!

Suggestions to get through rest of season? Bad plugs? Bad gas?

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