When you see the intake valve closing bring the timing mark up on t.d.c. and make shure the rotor is pointing to cyl. #1if not pull the dist. up enough to point it to #1 in the dist. cap or if the valve covers are on remove #1 spark plug hold your finger over the hole when and turn eng over till you feel compresson and set timing mark on t.d.c. and then set dist in P/S how did you determin you needed head gaskets