Engine is misfiring after changing coils and plugs

Tiny
BOOMASJBOOMAS
  • 2004 CHEVROLET TRAILBLAZER
  • 145,000 MILES

I have an 04 trailblazer that is miss firing I've changed all 6 coils and plugs cleaned the throttle body what else could it be? I had bad coil which I had to drive on for a while but since then I've changed all 6 with new plugs and cleaned the throttle body what else could cause this? Its 50 times better than it was with the bad packs n plugs but still misses slightly

Do you
have the same problem?
Yes
No
Thursday, December 1st, 2011 AT 6:36 PM

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