I live in the UK and my Vitara is using a lot of fuel. I get about 100 miles to a tank. I've noticed in the carb fuel 'dribbling' from the brass 'pipe' in the centre of the venturi on idle. Is this normal?
Ask your Mech to check the carb float and float needle, may the float or needle is damaged. which does not allow to maintain fuel level, resulting in flooding of fuel. some time a small blow on the carb near the supply line may do the trick.