Join the community and post your question. Use our Ask-A-Tech for free now! ASE experts standing by.

Forum > Failed Smog Test > Question

1977 Datsun 280Z Bad Odor From New Catalytic Converter

Hi. My 1977 Nissan Datsun 280Z recently failed a smog test and was told it was my catalytic converter and oxygen sensor. After replacing the CAT, I noticed a very bad odor.Should this be checked before the next smog check?

Answer:

Bad odor from a new catalytic converter sounds normal. It's more than likely the "burning off" of the light oil coating that's usually left behind during the CAT's production process. Your Datsun 280Z's exhaust gets very hot. Once the catalyst runs through a few heat cycles you won't have that odor any longer. posted by SmogTips Support

Related questions and answers you might find useful:

How Do I Get a Smog Check Waiver? by Margaret

Do I Need a Smog Check This Year? by Joy

Mini Cooper DMV Registration Due in 5 Day Won't Pass Smog by anne

2001 Jeep Grand Cherokee Laredo with K&N Air Filter by David

1995 BMW M3 Gross Polluter High HC & NO @ 15MPH by Jared

View SmogTips.com in: Desktop / Mobile