19-04-2021, 07:59 PM
Harking back to the initial question, at low airflow and no choke applied the main and compensator jets do not contribute much. The slow run and progression jets do. I run a 1964 Minx; these cars are notorious for blocked idle jets, not entirely solved even with a filter. Apart from preventing idle (without jiggling the acceleartor pump) a slight faltering can be detected up to about 50 mph on the flat. It is avery hazardous condition. If the jet is dropped on the roadside have to walk home!