need to see or to be told how to hook up the fuel. i cant tell which injectors are what my brother took the engine apart and i am trying to put it back together and i need to know how to run the fuel starting from the fuel filter.

 

all 4 injectors same, from fuel filter goes line to primary injectors (closer to block), then line up to secondaries, last thing on fuel rail is FPR (with vacuum hose going into it). From FPR just return line back to fuel tank...