I removed the engine and discovered the male-to-male adapter, connecting the egr valve to the pipe that goes to the intake manifold is solid. The adapter is manufactured that way. Why? Is this a mistake, a mechanics fix to cover another mechanical problem or a Europe/America issue. I also discovered the air pump was unplugged, which I think, is a mehanics fix for another problem. I bought this 2 yrs ago, drove a couple of months and parked in garage since. It drove very well and had no indication that something was seriously wrong. I am now returning it to service, and want to correct everything. The diphram in the egr valve appears to be no good. Why replace it if the adapter prevents egr? What is happening with the computer with a blocked egr tube and a disconnected airpump?