I have a 28 ft boat with twin 200 merc's. The counter rotating engine only delivers 4900 rpm at full throttle with motor properly trimmed. The other motor runs at 58oo rpm. I checked the carbs and they are all open to full. What could be the problem?
I have a 28 ft boat with twin 200's. I am only getting 4900 rpm on my counter rotating motor at full throttle with motor trimmed. The other motor gets 5800 rpm. Both have same prop. I checked the carbs and they are all opening to full. What else can I do?
