Smog Problem

[russodan12]

Hey all, I am new to the toyota family and now own a 1994 toyota 4runner, it is the 3.0L V6 model. I had bought the car without first having the previous owner smogging it (mistake one). The car runs great, but for some reason it did not pass the smog test, it says that it is running too high on NO(PPM) it was almost 200 over the limit. I do have an after market air intake on it. Any ideas what could be wrong with it? Please help.

 

[loki the trickster]

Hey all, I am new to the toyota family and now own a 1994 toyota 4runner, it is the 3.0L V6 model. I had bought the car without first having the previous owner smogging it (mistake one). The car runs great, but for some reason it did not pass the smog test, it says that it is running too high on NO(PPM) it was almost 200 over the limit. I do have an after market air intake on it. Any ideas what could be wrong with it? Please help.

1.how are your spark plugs.
2.is your air cleaner dirty.
3.do you have an aftermarket cat.
4.are your o2 sensors in good shape.

5.the idiot light may not come on but their may be a code in the ecu did you check that! don't ask me how to check for codes i have neve not done it but i know that you can do it with out having to buy a tool to check the code!

i hope this helps just a little!