OK.. I just took a look. It is simpler than I remembered. You don't have to remove the black cover (although that is quite simple anyway).

Basically, if you have your hand on the dipstick handle and then just move your hand 6 inches toward the back of the engine you will be touching the EGR valve. It is a circular gold colored thing. It has a small black hose going to the top of it. This is the control hose. It has a large hose on the side of it which goes over to the intake manifold I assume. It sits on a bracket that has a metal tube in the middle of it that goes to the exhaust manifold. I am guessing that would be the clogged tube but I am not positive. I am not sure what it would be clogged with since these engines burn no oil.

Hope that helps and if anyone knows I am wrong they will say so!!

Mike

__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra