[Kep]

If you haven't put it back together yet reassure yourself by looking down the tube to make sure that it too is unobstructed. When I did mine the rubber hose on the bottom of the EGR valve was full of carbon. For what it is worth, I ended up using a small screw driver and a pick to clean the crud out. The spray cleaners never touched it.

While you're in the neighborhood, consider cleaning the idle air control valve (IAC) too.

Kep