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Rusted Muffler Repair Requirements 1999 Chevy Metro

The seam on the long side of my Chevy Metro's muffler is rusted out. Will the smog technician pass my vehicle for equipment/visual inspection if I fix it with a 'temporary' patch and/or sheet metal sleeve and hose clamps?

Answer:

Technically the muffler is not part of a vehicle's emissions system. The only concern is that the muffler not have holes large enough to suction oxygen from the atmosphere into the smog machine's tailpipe sniffer during the smog inspection. If this should occur, the smog test will be aborted for excessive dilution. Repairing the muffler as you've described should prevent oxygen dilution. A smog technician should not fail your Chevy Metro on the basis of a visual malfunction due to the muffler being patched. posted by SmogTips Support

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