Warm up the engine to normal operating temperature
Check and clean the air filter
Inspect spark plugs, fuel lines, and vacuum lines
Locate the idle speed screw and mixture screws
Turn mixture screws gently to the factory baseline setting
Start the engine and let it idle
Adjust the idle speed screw to the recommended idle RPM
Turn the mixture screws slowly in small increments
Find the smoothest idle position for each mixture screw
Re-adjust idle speed after mixture changes
Blip the throttle and check engine response
Fine-tune until idle is steady and acceleration is smooth
Recheck for fuel leaks and loose connections
Test drive and make final minor adjustments if needed