From: mik@localnet.com   
      
   "Joseph Wind"  wrote in message   
   news:so3Bj.2739$HA3.2346@trnddc02...   
   >A friend of mine has a 94 5VZ 4Runner. It failed on the 15mph test, too much   
   >NO more than double allowed.  It passed fine on the 25mph test, but still in   
   >the upper limits.  CO2 and HC levels are within normal or below average.   
   >   
   > The SMOG tech suggested it was running too lean.  I don't think it's the   
   > CAT, IMHO, but I'm leaning towards clogged injectors or bad MAF sensor, but   
   > usually it would run rich if the MAF is bad.  The EGR valve was recently   
   > replaced, but I'm not sure if it was replaced before or after the SMOG test.   
   >   
   > What else would cause the NO to be so high?   
   >   
   > TIA   
   >   
   > JW   
   >   
   > P.S.  I'm referring to California SMOG test.   
      
      
    High NO would be casued by an inoperative EGR system.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)