86toyotaprerunner14

so i bought this 1991 pickup with the 22re not running and i was told that the injectors where not firing so i was trying to find out why well in the process i pulled the fuel plenum of and there was fuel standing in the manifold?? so i pulled the valve cover and and the cam is moving and the valves also the truck starts if you put fuel in the throttle body and there is no fuel on the plugs ??