Quote:
Originally Posted by BCOWANWHEELS
SO what is the best poor man way to set the carb
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By "set the carb", I assume you mean idle mixture settings?? This setting is the last one to do.. Carb must be correctly assembled, internal settings -- float level, etc during the assembly.. If you have bad or leaking vacuum hoses, now it the time to clean all that up, as vacuum leaks, even small almost undetectable ones, have a big effect on carburetor adjustments..
Mount the carb, be sure the choke is properly adjusted along with the choke pull off. Use a hand vacuum pump in adjusting the choke pull. These settings/adjustments should be covered in the instructions that came with the kit..
Once the choke is adjusted, start the engine and allow it to warm up while watching the choke "release progress".. Make fast idle and other choke related adjustments during this time.. Once the engine is warmed and the choke is FULLY released, adjust the curb idle and ignition timing..
Here's where a trained ear and experience come in. Personally, I've never used a vacuum gauge for making carb adjustments.. That doesn't mean it's wrong to use one... I use what I call "RPM roll off".. It's a way of cleaning up the idle emissions.. Alternating from side to side, rotate the idle mixture screws counterclockwise, searching for the highest idle RPM.. Try to maintain a balance of turns on each side.. Once you have found the highest RPM setting, re-adjust the curb idle speed screw to bring the engine back closer to the spec'd idle speed. Then rotate the idle mixture screws clockwise, each an equal amount, until you obtain a 50 RPM drop in idle speed.. If the idle is smooth, STOP right there.. If the idle is rough, add about 1/8 turn counterclockwise to each idle mixture screw.. Re-adjust the curb idle speed and you're done......