1932 Buick straight 8. 50 series. Black smoke from exhaust?

Before and after a complete engine rebuild there was:
- Serious black smoke from the exhaust
- Failure to operate at high rpm
- Starts and idles well
- Intermittent black smoke at almost all rpm levels
- Exhaust sounds
burning to rich adjust carburetor
chris432134 | Jul 25, 2007