2000 Volkswagen Passat 2000 VW Passat Rough Idle and High F

I have a 2000 VW Passat 1.8 Turbo with 160K Miles on it. It ran like a dream until about a month or so ago. About a month ago I had the dreaded oil sludge problem. Once that was fixed I now have what I think are vacuum problems.

1. When I go to start the car the car will not start. It cranks but engine will not start until I press the gas to the floor once and then it starts.

2. When the car is started at cold idle it is very rough and sounds like it has misfires. This symptom goes away at 1500 RPM and while driving. Changed coil pacs and plugs.

3. At start up and while driving inner city the brake pedal is very hard and does not stop the vehicle very well. I checked for vacuum leaks and found nothing

4. When I press the gas after being stopped at a stop light the car lags. Really lags. RPMs stay between 1500 and 2000 RPM and then it magically kicks in and the car takes off. I went through and changed the Overrun cut off valve (was full of gummed up grit and grime) as well as the Carbon Filter purge value

5. Fuel consumption and MPG is also way low. Inner city is somewhere around 10 – 15 mpg right now. I haven’t touched the fuel system but did have everything serviced at 110K miles.

I have a mass air flow sensor / meter on order and should have it by Friday. Is there anything I am missing?

I have had it to three “certified" mechanics with no avail and really wanted to get some feedback before I took it to a dealer.