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1991 Honda Accord 2.2L - Failing Smog Check in HC, CO and NOx.

My 1991 honda accord failed smog test. I'v already replaced spark plugs, distributor cap, Oil change & filter, timing adjusted, pipe & muffler, and ignition lock cylinder. My emission test results were |%CO2 |%02 | HC (PPM) | CO (%) | NO (PPM) | Test | RPM |MEAS| MEAS | MAX | GP | MEAS | MAX | GP | MEAS | MAX | GP | MEAS Results 15mph|1746 |13.2 | 0.9 | 83 | 293| 214 | 0.75 |2.25| 2.01 | 559 |2002|2597| GROSS POLLUTER 20mph|1844 |13.3 | 0.9 | 65 | 243| 191 | 0.63 |2.13| 1.98 | 516 |1802|2307| GROSS POLLUTER Please help me pass my next smog test.

Answer:

You'll need to have a smog check repair station diagnose your Honda Accord's smog check failure. This car can fail the smog test for many reasons. In this particular case you have high emissions in all three tailpipe emission test categories. They may all be related to one problem, such as a defective CAT, or your Honda might have several faults causing high emissions. We can only suggest getting a hands-on smog check failure diagnosis. For more information on specific reasons for the high emissions in the three categories of HC, CO and NOx... visit this page: High Emissions HC CO NOx. posted by SmogTips Support

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