consuming a lot of gasoline a Hyundai Elantra 93

Greetings friends I want them to help me, it is consuming me a lot day returns to less than 1000 revolutions, it will be for this that is consuming me gasoline or that will be, thanks for your comments and sorry for the inconvenience

Is an elantra 16 valves double cam?
bring flow or MAP sensor?
did you scannea
pull black smoke?

Sis Olo is an excess of consumption, the refinement to be performed includes the change of the air filter and the spark plugs, but if it is for consumption you can be in poor condition your oxygen sensor or your temperature sensor, now if your vehicle constantly circulates with the highest revolutions of the Noemal or do not go down as they go down, Czech where the Relay regulator is if it is due to water, that the hoses are unblog.

Greetings Joni07, if I effectivama is a 16 double lift valves and is not smoking at all, just that you are consuming me a little more gasoline, thanks for your answer,

Thanks for your help I will check this and change the air filter, anything bothers you again thanks for your contributions