Idle too high on 250 merc

skillman

Petty Officer 3rd Class
Joined
Nov 15, 2007
Messages
76
I have a 2003 merc 250 efi. Seems the motor runs absolutly great other than ive been having an idling issue,when i first start motor up it idles fine "sometimes" but as soon as i put it in gear and go back to neutral it wants to idle between 1300-1600 rpms all the time. Any info would be greatly appreciated!
 

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
Re: Idle too high on 250 merc

Check the small vacuum line between the intake and the computer, sometimes the small brass orifice gets plugged up and affects the idle.
 
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