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#smogcheck

2 clips from 2 authors · 4.7K total views. Every clip opens with its own counters and comments.

What do five exhaust gas readings reveal about an engine? 🔧 HC, CO, CO — @masterautotraining3.9K1:29@masterautotrainingHappy Earth Day! "Leno’s Law,” informally referred to as such due to J — @tinkerdiy7280:08@tinkerdiy

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