What to Do If a Car Fails the Exhaust Emission Test?

1 Answers
LeLilah
07/30/25 2:12am
Both new and old ones will work, as long as you clean the electrode points with sandpaper and adjust the gap properly. Delay the ignition timing, which will significantly reduce the nitrogen oxide content in the exhaust. Due to the delayed ignition timing, the combustion time in the combustion chamber will be shortened.
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