1985 with 1.9L,, Idle sounds pretty smooth but eng’ does a significant amount

of rocking & when rev’ed off of idle rocking goes away & it runs pretty nice ~

        The puzzle > When pulling SparkPlug Wires to see if there is a Cyl’ with an issue,

#1              Causes very slight degrade in smoothness

#s 2&4  Cause Significant smoothness degrade

#3              Causes Smooth as glass idle & also off ldle