my car shacking when i press brakes and stop but when i drive it does not do that but not enough power

2005 CHRYSLER 300
11,400 MILES
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LISSETTE
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  • 3 POSTS
i put new wires and plugs and core pack and it still doing it. i took it to machine it say number 7 not firing what is that?
Mar 22, 2012 at 11:21 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
-Could be rotors warped on shaking and no.7 is cylinder no.7 -check sparkplug, compression and injector for that cylinder
Mar 22, 2012 at 11:29 PM
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LISSETTE
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  • 3 POSTS
thank you so much
Mar 22, 2012 at 11:51 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Your welcome
Mar 23, 2012 at 4:23 AM
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