my 2006 trailblazer L S won't pass smog

Asked by Apr 14, 2014 at 02:10 AM about the 2006 Chevrolet TrailBlazer LS

Question type: Maintenance & Repair

my 2006 trailblazer LS won't pass smog, all new plugs, the #6 plug is miss firing,
mechanic switched #6 around, It won't hold the RPM'S and the engine light came on

2 Answers

56,815

Could be a bad fuel injector or coil on #6. HTH. - Jim

120

Or a bad ignition coil.

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