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Posting a reply to: Re: 2001 Mercury Optimax Rough idle and rough running low rpm

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hi


You are replying to:
kjgmh
Posted 6/26/2017 3:55 PM (#866542 - in reply to #866502)
Subject: Re: 2001 Mercury Optimax Rough idle and rough running low rpm





Posts: 1091


Location: Hayward, WI
Also make sure that the motor is running at proper temp at idle. If thermostat is stuck open or something else is preventing it from running the proper temp they can run rough at low speeds.

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