I'm going out of town for a long weekend, so I'll have to take a look next week. Anyway, I still don't know what is blackening all the plugs immediately. I'm talking while sitting in the driveway....just a few minutes. What ever is responsbible for that, is probably the same reason the engine doesn't run worth a darn. It even shakes and shimmers at idle. I'd have to get it in front of me to resp to Denny's open/closed question. Can't remember. Donsz, I'll take another look at teh points...I've looked at all this stuff a thousand times.....Obviously, I've overlooked something. I've never been this frustrated with this truck.