Mercury 115 4 stroke bogs down- rough idle

red bullet

Recruit
Joined
Jul 27, 2010
Messages
1
I have a 2002 115 4 stroke efi. Last time I ran it, everything was going well, idles smooth popped up on plane then it felt like I hit something. It dropped in rpms. I checked as I did not hit anything, when I throttled up again, it bogged down. After a bit it would sputter and take off then bog down again.When it bogs down, it runs about 4000 rpm then takes off full throttle with out adjusting anything. At idle it will be smooth and then sounds like it is missing.
Any ideas on what could be causing this problem?
 

Dave1027

Lieutenant Junior Grade
Joined
May 25, 2010
Messages
1,083
Re: Mercury 115 4 stroke bogs down- rough idle

Use the search. There was a thread recently about this motor and basically the same problem which turned out to be clogged injectors.
 
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