what would cause the car to have a high co reading at 2500 rpms on a ca emissions test

1980 DATSUN 200B
180,000 MILES
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DBELFAY
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car passed all but this part of test
Jun 20, 2012 at 7:30 PM
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DRCRANKNWRENCH
  • ✓ASE Certified Mechanic
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It is probably just the age of the car. There could be oil getting past the rings and burning or the entire fuel charge is not getting burnt.
Not anything to worry about with a car of that age, it is normal.
Jun 20, 2012 at 10:19 PM
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