Howdy I own an Evinrude 18hp fastwin from 1973. The low speed on this engine is fine but when I give it gas it seems to have no power and runs kinda rough like the fuel air mixture is off. I have replaced the condencer and coils and points. Rebuilt the carb, cleaned it etc.Looked at the manifold all "leafs" etc are fine. So I took it out with a can of carb cleaner and gave her a shot while driving and it took of so fast I almost fell out. Im guessing its not getting enough fuel because she definatly wants to run. But it has a fixed high speed jet so im not sure what to do. It seems there is just a tube from the bottom of the bowl straight up into the throat of the carb and it isnt clogged. What is my next step to diagnose this problem????
