Thread: HELP-metallic tapping sound, what could it be?

broken spring? go ahead and pull off the valve cover and check...

i took off the rear and front valve covers but did not notice anything wrong with the springs nor the rockers. although i dont have a 28mm socket to manually crank the crank pulley i tried pushing down on the rockers on the pushrod on all of them to see if any of them would sink, to test whether it would 'collapse', but none of them did. upon start up i noticed the lifters tick a bit louder than usual and after driving til the motor warms up and i start eharing the tapping sound, it seems to go in sync with the misfire/lopiness of the vs cam. is it possible a lifter(s) would go from a loud tick to a metallic tapping sound?