Author Topic: Car heats up and doesn't want to idle at low speed  (Read 32 times)

Offline Cool Caddy

Car heats up and doesn't want to idle at low speed
« on: August 13, 2019, 08:42:45 PM »
SO I've re-manufactured the original Rochester carburetor. Fresh engine. Everything is pretty new. The car runs great until it's warmed up and falls off the high idle cam. It idles so low that it doesn't want to stay running. I adjusted the air idle screw (the large one at the back of the carb) out 3 turns as the manual says and then adjusted the primary and secondary screws. Not sure what else to do. Any suggestions?

Offline russ austin

Re: Car heats up and doesn't want to idle at low speed
« Reply #1 on: August 14, 2019, 08:43:58 AM »
The large screw is for your idle. Adjust to the idle you want.  You have to adjust the 2 smaller fuel screws as well, to keep the mixture in the sweet zone.
63 series 62 4 window sedan, 63 Superior Hearse
62 Fleetwood

Tucson, AZ  USA