Ok , Now I am really confused....... I recently installed new intake/ carb/ and distributor. Now the truck will not run unless it is advanced between 15 -18 degrees initial (with the advance plugged of course). I've tried to set it around 6-8 and it will barely keep running. The stange part is that the engine does not ping or knock with it advanced so far . Any ideas?? The engine does have a miss especially when I try to set it retarded.