i had rust in my tank and it started to clog the injectors and the pump in the tank, if the filter doesnt help pull the top half of ur intake and fuel rail and check the screens in the injectors, if that is the case pull all of the injectos being carefull not to destory the o rings and clean them with carbuator cleaner  and u might have to drop the tank pull the fuel pump clean it and fish tank rock with about 2 gallons for gas and rust remover and shake it for a good hour violenty till the rust is gone