Injection problem?? Please help

I bought a 95 accent with a 96 engine in it but here its the problem with a full tank in city i run like 200km not more im not loosing fuel fuel line are ok fuel filter is new spark plug and wire are new. And its still continue to lose fuel.. Can you help me please i don't know what to change now. Mass air flow,problem with ecu?? Please reply


Sorry for crappy english!!

Have it inspected. Check gas filter. Fuel injectors etc. Have a tech look it over. I get about 38 highway and 31 or 32.

city