mr.ahamed

Hi there, My dad owns a nissan sunny b310 and its been with our family for the last decade. The car all in all is quite alright and runs okay with a general mileage of about 12kmpl. In recent times with the implementation of these eco tests, it has been failing miserably despite what adjustments i do. They ask me to clean air filters, adjust ratios, clean plugs. Im just so confused. Water literally drips from the exhaust so i don't really see it out of tune. Even today i went to get an eco test done and they failed the first attempt saying the fuel flow is a bit too much and that i should clean my air filters. I have no idea how a car so smooth manages to fail like that. Please if anyone knows a place where i can have this properly looked at and tuned to pass these tests it would be great. Preferably around kelaniya, kiribathgoda, kadawatha areas in general. If it's a real professional i don't mind going the extra mile. Thanks in advance.