[Paulporsche]

Try using terms like "WUR" , "hunting idle" and "mixture". Check out Jim's site on CIS. There is also lots of info on how to use the "fuel pressure gauge" to check your WUR.

As Jim said, it's quite often a too rich mixture, usually from rither an out of spec WUR or from something else, like a vac leak, that someone has tries to make up for by setting the mix too rich. This usually results in an oscillating idle speed.

I also have a very long thread on several problems I had simultaneously that led to start and run problems.