2006 mercury 40hp efi

Tim8801

Recruit
Joined
Jul 26, 2020
Messages
2
My motor is idling slow and rough and is burning rich. When I rev the motor it sounds like it is still rough like a miss. Could all these issues be form the same problem, Im thinking about trying to change out engine coolant temp sen. could it be the cause or am I looking in the wrong direction.
 
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