well I wrote in a couple of weeks ago with a van that would not run after replacing fuel lines(and filter), intake boots and injector seals.  got  the battery charged and it is running really rich and flooding.  I should mention that I also replaced the connecting pipe, O2 sensor, muffler and air filter(purolator from pep boys).  gave up trouble shooting the problem after I checked and double checked all of my work and took it to a VW shop locally.  Well, they can't seem to figure it out either(DOH!).  I would like some suggestions to give them to try.  They have already replaced the plugs becuase they were fouled and drained and replaced the oil becuase they said that it was over filled due to the extremly over rich mix.  They said they were going to check for a vacuum leak( I was under the assumption that that would make it run lean).  Some things I was thinking after reading the archives is either the plug wires, the connection of the O2 sensor (evidently this is coaxial connection. I used a 1 wire bosch unit same as what was on the van. just cut the connector from old and put it on the new one.)  The other thing I thought of is the AFM.  Could I have jostled the swipper thingy or flap got stuck open when I had it out of the van to get at the manifold etc.?  I don't know but I can't leave my van with a shop charging me god knows what an hour to try to "figure" this out anymore ( they already have over 2 hrs. on it already)  Please someone read this and reply before I call them again tommorrow.  Thanks everyone.