Hey all, I just had my semiannual CA smog check, and noticed that the NO is up from last time, and is above average for the vehicle type (vanagon, obviously :) ). I'm way below average on the other readings (O2 = .1/.4, HC = 14/13, CO = 0.04/0.05, NO = 351/466 - the */* indicates readings at 15 and 25 mph). Any thoughts on what may cause the higher NO? Time for a tuneup maybe? Thanks, Joel |
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