YOU MAY NOT HAVE A BAD EGR VLV , BUT ALL MOST GAURENTEE YOU HAVE PLUGGED DISCHARGE PORT FOR THE EGR , REMOVE THE THROTTLE BODY ON THE FRT OF THE ENG FOUR BOLTS HOLD IT TO THE INTAKE MANIFOLD , LAY IT OVER OUT OF THE WAY, NOW LOOK DOWN IN THE OPENING RIGHT AT THE BOTTOM OF THE MANIFOLD AND YOU WILL SEE A STEEL PIPE POINTING FORWARD IT SHOULD HAVE AN OPENING IN THE END OF ABOUT 3/8 IN OR BETTER THIS IS THE DISCHARGE FOR THE EGR VLV
CLEAN THE PACKED IN CARBON OUT AND THEN RUN A FLEX BORE BRUSH OR A SPEEDO CABLE ON A DRILL UP IN THE PIPE AND CLEAN IT OUT , IT WILL NORMALLY ONLY PLUG UP ABOUT 2IN IN, NOW REMOVE THE EGR VLV AT THE BACK OF TH ENG AND BLOW ALL THE LOOSE CRAP OUT BUT WATCH YOUR EYES , CARBON CAN AND WILL HURT IF IT HITS YOU NOW SPRAY ABOUT HALF A CAN OF BRAKE CLEANER DOWN THE TUBE AND WASH IT OUT , PACK SOME RAGS IN UNDER THE END OF THE TUBE AND CATCH AS MUCH OF THE JUNK AS YOU CAN , JERRY