Hesitating at 2000 rpm... what\'s up with that?
Argh! Another problem: when I rev the engine up slowly, it starts sputtering and occasionally dies at 2000 rpm (load or no load). If I push it past that magic mark quickly, it runs fine, too. Vacuum lines tight, engine has 2000 miles since rebuilt, Weber carb, good plugs/wires, good idle at about 600 rpm, nothing that would tip me off immediately. What am I missing?