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Discussion Starter · #1 ·
Am all.

Lately I have been noticing black smoke from exhaust when im punching to merge onto expressway from my 00 v70r.

I recently felt a hiccup/stutter, the check engine light winked at me. I scan my OBD finding misfire faults.

Reset and test. All is well. I have not replaced my o2 sensors since owning vehicle. Should be concern?

I also have been experiencing an intermittent long crank after driving a while.

Thx for help.
 
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