1990 Merc 200 xre efi

by Mikey

Motor starts & runs just fine, but once clearing the buoy line it will not take the throttle. Can only get 1800-2000r's. Bogs as if dragging the dock along with me. Problem started 5 years ago and was intermittent for years. I would stop & fish for 1/2 hour, start back up and it would run like a scalded dog the rest of the day. Problem gradually got more pronounced until now it is constant. I have replaced coils, switchboxes, plugs, all fuel lines and all filters. I am a mechanic, but this one's beating me up. Help???

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May 23, 2022
by: Anonymous

Haven't heard of that one, so I'm not sure. It's been going on for 4 years. Beating me up!

May 21, 2022
by: Jamie Bradley

Bud, I'm a 20 year diesel mechanic and a boat is another world. But I got a question. Does your engine have that idle stabilization module. I just found mine to be bad. Don't know if it will fix it or not. I just stumbled across a wire that just falls.to peices all the way to the box just a suggestion

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