It is not neccessary to remove the manifold in order to "roto root" the EGR tube. the EGR valve sits on top of the rear manifold and is attached with two studs. For easier access, remove airfilter box, MAF and and associated air duct. Remove manifold heat shield and vacuum line that goes to front of EGR valve.. Disconnect tube flange nut from back side of EGR valve, then remove nuts from studs at base of egr valve. (Careful, these studs break easily---new manifold $100 from salvage yard--I speak from experience) It will take a little bit of wiggling to get the EGR valve off. Tube is now accessable. Carquest sells a generic speedo cable for about $8.00.

Disclaimer: I don't know if you can do damage by inserting the speedo cable to far. Also don't know if deposits that you break loose can get inside the engine somewhere and cause problems. I think this is a band aid fix. I have a high mileage car (178,000 miles) and the head gasket leaks a little bit. I did this procedure with the thought that if things go wrong, I'll remove the head and do a complete top overhaul. I'm not sure I would do this to a low mileage car.

J. M. van Swaay