TWJ

Having read through a number of old threads I believe I have narrowed the problem that raised it's ungly head this past weekend to one of two issues. The problem, which occured very suddenly, is that my '72 911T (with engine rebuilt to 'S'specs) first began to idle irradically (up and down slightly) then began to pop (misfire?) occassionally, then both got dramatically worse quite quickly. That is the idle would drop suddenly with lots of popping and it would pop some at any RPM level. All the time the tachometer seemed to have a mind of its own, sometimes reading correctly and others times on a wild ride. Is this an indication of a problem with the points (I think) or potentially with the MFI (running to rich)? Having rebuilt and fine-tuned several VW's 25-30 years ago nothing on this engine looks to unfamilier or intimidating to work on (maybe the MFI). As always the help is greatly appreciated!!!