Tried to do the test Hey and couldn't see anything ( old eyes I guess. lol) Anyway, replaced the plugs ( Had to get Champion since nobody here had Autolite in stock) and went ahead a changed ignition coil so now she is running smooth again. I did copper plugs. #5 plug looked a little more nasty but others look pretty even. I remember back when I bought new injectors from 1A Auto and they didn't last maybe month before one or more went bad on my way to work. They were dumping fuel into cylinders so bad I almost didn't make it back home so I put my original ones back in. They gave me the round around so I ate the cost and they lost a customer. I don't remember if i changed plugs then or cleaned them and moved forward? Thanks