Could be a fuel filter issue, but I had one that was very plugged, but still the engine ran fine.
The fuel line connection release tool is available as a set of collars at NAPA stores, and most auto parts stores. Be sure to depressurize the fuel sysetms before disconnecting the fuel lines, and a fair amout of fuel will drain out once the connections are undone, so use caution and safety.
Any Check Engine Light (CEL) displayed?