Can someone explain what this is? I can find alot about it, but not what it is and does. I see it stands for Spark Out, which means?
It's a jumper/plug that allows base static spark timing to be set. Unplugged = fixed timing (how the base timing is set), plugged in = normal op where ECM can control timing.
Located near the disty, sometimes hard to spot. Mine was all tangled up in the harness in that area.
HTH
Sure does. Thanks for the info.
Think of it as an elctronic version of the old vacuum advance systems.
Ahh, ok, now it makes perfect sense.
