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View Full Version : 97 Mercury 200 EFI Offshore Miss At idle ?



RChabit
07-01-2008, 10:57 AM
Hello,
I'm new to outboards, and boating.
I have just recently purchased a 22ft center console with a 97 Merc 200 EFI offshore on it.
I have used the boat for about 20 hours and everyhting was fine, until this weekend I took it out and towards the end of the day the motor had a really low idle and was rough. If I sat there in neutral it would idle low but would not be hitting on all cylinders, put it gear and it will stall. Anything over 1800 rpms it runs great.

I replaced the plugs,
changed all filters
Inspected the vapor seporator, it was clean no debris.

It seems like a sensor or electrical problem at low rpm.

Anybody have a suggestions

Thanks
Mike

skydog
07-01-2008, 11:09 AM
Spary a little water on wires and coils look for a light show!! :) :)

Skydog