Help with smog inspection please! I bought an 88 Turbo automatic as a bit of a basket case. Broken timing belt and a lot of the engine in the hatch. After assembly it runs fine but will not pass California smog inspection. Here are the results:
At 15mph and 1733rpm the measured CO2% was 13.90, O2% was 0.38, HC (PPM) was measured at 178 and the max allowed is 106. CO% was measured at 1.07 with the max allowed 0.70. NO was extremely low at 32ppm
At 25mph and 1708rpm the measured CO2% was 13.69, O2% was 0.35, HC (PPM) was measured at 194 and the max allowed is 81. CO% was measured at 1.27 with the max allowed 0.57. Again the NO was very low at 64ppm
After buying the car I found out that the car had failed smog 6 consecutive times. Not really sure what the owner was trying to accomplish.
So far I have replaced the O2 sensor, air filter, spark plugs and realize that I probably need a new Catalytic converter. I hesitate to do this right now because I believe that the car is running very rich. I wiped out the tail pipe and took the car on a 20 mile drive. By the time I got home the tail pipe was again coated with a heavy layer of fluffy soot. Seems to me that if it is running that rich, I am just going to poison the Catalytic if I put a new one on it this condition?
I guess I have two questions. What would cause this thing to run so rich? Or, will a new catalytic fix the problem? I personally doubt it.
Any advice appreciated.
At 15mph and 1733rpm the measured CO2% was 13.90, O2% was 0.38, HC (PPM) was measured at 178 and the max allowed is 106. CO% was measured at 1.07 with the max allowed 0.70. NO was extremely low at 32ppm
At 25mph and 1708rpm the measured CO2% was 13.69, O2% was 0.35, HC (PPM) was measured at 194 and the max allowed is 81. CO% was measured at 1.27 with the max allowed 0.57. Again the NO was very low at 64ppm
After buying the car I found out that the car had failed smog 6 consecutive times. Not really sure what the owner was trying to accomplish.
So far I have replaced the O2 sensor, air filter, spark plugs and realize that I probably need a new Catalytic converter. I hesitate to do this right now because I believe that the car is running very rich. I wiped out the tail pipe and took the car on a 20 mile drive. By the time I got home the tail pipe was again coated with a heavy layer of fluffy soot. Seems to me that if it is running that rich, I am just going to poison the Catalytic if I put a new one on it this condition?
I guess I have two questions. What would cause this thing to run so rich? Or, will a new catalytic fix the problem? I personally doubt it.
Any advice appreciated.