[Reds]

KIWI, I just saw your post. My problem has still been coming and going. But I have narrowed down the cause, but not the fix. I was thinking that I had a fuel or electrical problem. But earlier this month it started running rough when idling too. The original problem was only when it was not idling. I hooked up a vacuum guage to the windshield wiper port on the carb base. The vacuum was at 12 and when I revved it up the vacuum dived down to about 2 and then started bouncing all over. I thought I would try my other vacuum guage for the hell of it. The truck was running and when I pulled the first vac guage off of the hose the engine started idling nice. So I have a vacuum problem but a strange one. When I create a huge vacuum leak by opening up the vacuum line to the outside air it ran nice, idle or revved up. Hook the vac line back up and it started running fine again. I have not had time to play with it this week, but will try to fiddle with it some more this weekend. I am going to try running a hose from vac. port at base of carb into the cab. I will start the truck and drive it with my finger over the hose. If it starts missing I will pull my finger off and see what happens. Maybe I will have my son work the finger in the hose thing while I drive. This is driving me nuts. But at least I know that I have a vacuum problem not a fuel problem or electrical problem. Thanks for asking about it. I just bought some MMO and Risoline - I'm going to drizzle the MMO down the carb while it's running.