problems with passing smog.

[clown1]

I have a 93 240sx. I went to get it smog an it didnt pass because it was releasing to much NO(PPM) an just alittle to much of the CO2. I went to a shop an they told me that it could be my EGR valve. I was wondering if some one could help my out with this situation. thank you .

[worangejuice]

look up "seafoam" and run a can throught the hose that goes straight to it. Also search "egr malfunction" in the search tab.

[clown1]

thanx for the help what about if that doesnt work do you think that i would need to buy the EGR valve?