HotRod.com, SuperChevy.com and UnderHoodService.com are some places that have information available on adjusting Rochester carburetors. Each site covers different aspects of Rochester carburetor adjustments, including tuning, identifying common tuning issues and diagnosing the appropriate adjustments.
HotRod.com discusses the individual circuits of the Rochester four-barrel carburetor and how to fine tune the air and fuel flow for optimal performance in all types of operating conditions, including starting, load and engine speed. SuperChevy.com illustrates the need to tune and maintain Rochester Quadrajet carburetors in a fuel environment where ethanol is now a standard component. UnderHoodService.com provides detailed instructions on diagnosing Quadrajet carburetor problems and the adjustments necessary to properly tune the equipment.