Quote Originally Posted by luffin View Post
ahh ok po thanks. dun sa sinabi ng mekanik na 1 week pa daw bago mawala ung tik tik na tunog kasi unti unti daw ang paglapat ng valves, totoo po ba to? tsaka dun sa sinabi nia na hindi na dapat sundin ung clearance sa manual kasi hindi na bago ung sasakyan?



If the cam lobes are worn out, the cam lift and duration (angle of cam rotation from opening to closing) changes and should be replaced. The clearance in the specs should still be followed. If it still makes tappet noise, the cams are either worn out or misadjusted. Or sometimes like on Toyota 22re, 22 rc or 22rte, the tappet adjusting screw end wears out and you thought the clearance was sufficient until the cams rotate. In the latter case, you replace the rocker arm adjusting screw