I have a late 1968 195 with a K301 in it. I can run it for 15-20 minutes, then it dies. Full choke and it's up and running, full choke only and not anything past half throttle. It still has the original fuel pump on it with the steel plate on top, and a Carter N carb. Let it sit for 20 minutes and it runs fine again, then same thing. :headscratcher: I have a stock replacement muffler on it from Steve to replace the guys erector set of plumbing on it, but missing the heat shroud for the pipe on the back of the engine. Seeing as it runs with the choke on I'm ruling out the coil, condenser and points.