No lifters in these engines, just bucket and shim . You sure you're not just hearing the injectors? i'd get the code checked out, might just be an excessive temp code.
Anyone have any stock rear springs laying around?
focus sport cool-flo, f2 v.3 header, trubendz 2.5 SS, frpp 1.5" front sportline rear, vf rear engine mount, 93oct Focus Power tune