Originally Posted by cashoit
EGR = exhaust gas recirculation system. Its too keep the combustion chamber at optimal temps. Exhaust gas is recirculated back into intake through that tube. the buildup is unburned carbon from burning cheap *** gas.
The chevron may be able to remove it. Seafoam may do a better job. The last resort is to manually take of the tube and clean it. This will require some work.
Click here to see a picture of my EGR valve:
So in the picture, there are two small black hoses attached to the middle (silver) section. When I pull them off, a green liquid spills out. There is no buildup at all in these hoses that I can see. Are you saying that this green fluid should not be in there? A significant amount spills out every time I remove these hoses. On the bottom section of the valve I can see where the exhaust circulates through, but I am talking about the middle section. Thoughts?