i did today on my CX yeah 8 valves. and now it taps only at partial throttle and alittle at idle. i did'nt do 2 of the intakes cuz they felt ok but i guess now i have to do it all over again. My question is since i know they replaced the head gasket not to long ago would it sound like what i described if it was just the lash or could a valve be tapping the piston???