[MPDano]

#1 with CIS is have you cleaned the whole pathway of fuel? All the Filters in the Fuel Distributor and the one one the Inlet side of the WUR? Have you removed all your Injectors and verified they are actually any good. You can do a quick test with some Carb Cleaner in the Injector, then use a Compressor to push the fluid out. You should get a fairly decent fan spray out the tip. How is the condition of the AAV (Air Aux Valve)? have you tested it? There is a pretty good video on how to do that on Youtube.

Also, without actually taking the Fuel Distributor apart. Remove it and see if the plunger moves freely, which you will see on the bottom side of the Distributor.