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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.

Hi, I have a 1985 Toyota sprinter which used to do well on fuel. There was an oil leak and the engine was recently overhauled. now the car does a little over 8 KM per litre. It used to do over 10 per liter in town with AC. Anyone knows how this can be fixed? Last week, the Carb was cleaned with cleaner. the rings have been replaced with the spark plugs, plug harness etc. There does not seem to be a performance loss but there is a loss of mileage which is very expensive. Any hints to fix this? I was told this carburettor is complicated to tune so maybe the garage accidentally changed something that should not be changed. Thanks! Gayan