I have a 66 Evinrude with the Hot Water Choke carb. The motor will start and run quite reliably and motor around the lake fine at low RPM. After a local shop fixed a stripped plug port with a helio coil, I only thought some tuning was needed. So I tried the carb tune up and throttle cam adjustments from the excellent posts by J. Reeves and the moderator here on iboats. No matter what adjustment, the thing still dies out as I move the throttle toward advance. Yesterday I could watch the throttle Roller, and as soon as it lifted off the Cam a 1/2 inch or so, the RMPs would start to fade and die. I'm not sure what the choke position should be during tune up. I find the best running at automatic or Off. But still always it drops out on advancing the RPMs. Also I notice the choke assembly was not tightened and was wobbly when the motor was running. I opened it by removing the disc that says "lean" with a arrow. in there, the spring that connects to the (choke?) plunger looked like a rig job. Anyway I tightened the assembly to the carb and still had the same problem. Then the belt broke and my troubleshooting had to stop. Any ideas for a debug starting point on the RPM issue? I will try to find a new belt and continue searching for a solution.
