Why people don't get good fuel averages from carby cars:
-direct fan, thermostat, auto choke always closed
-air fuel mixture? vacuum gauge? exhaust gas analyzer? wo kya hota hai? Ye timing gun kya bala hai?
-pumping the accelerator for absolutely no reason during driving, making the accelerator plunger work overtime. This one particalarly annoys me - it also contributes to poor fuel economy of auto transmission cars, and i-Vtec/Vtec-e Hondas.
-"carburetor gaari ko chalane se pehle full garam karna hota hai" (idles car for 20 mins before driving off for a 10 min journey).
-people expecting mechanics to bring their carbs to full working specs for 100 rs "tuning"