hey guys, im having difficulties in tunning the proton wira, 4g15 stock carburator..the car are consuming lots of fuel..about tunning,..usually when i screw the AF screw all the way in, the car will die off...but now, when i screw all the way in, the car won die..and the mixture still remain rich...wat can i do? i aldy ask forman to clean the carb for me....wondering wat is the prob? vacum leak? or carb hav to change d? guys u all ever face this prob bfr? perhaps can hear ur experiece and advice...thanks