99 chevy venture. battery is fine but it won't start.

99 chevy venture. engine wants to turn over fine but it won't start. what should i do? it started with it dying while on the road, kind of made a sputter noise right before it died. i got it started again right after but when i pushed the accelarator it died again. now it won't start at all but the engine is cranking, it's trying to start. could it be the fuel line? i don't know where to begin on where to look for the problem. thanks!