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1997 Chevy Camaro Misfire

Tiny
RESCUEFE
  • MEMBER
  • 1997 CHEVROLET CAMARO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
I have a misfire in the #3 cylider (per my code reader) at RPM's below 1200. I have changed the coil pack, the module under the coils, the computert, the plugs and wires. Sometimes the misfire goes away, sometimes the engine runs very rough at idle and sometimes not so rough. The compression test was good. What else can I check? Could it be the injector?

Thanks,
Sean
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Thursday, January 31st, 2008 AT 5:24 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
A misfire in a specific cylinder should lead you to check the spark plug, fuel injector and compression

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel
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Thursday, January 31st, 2008 AT 5:43 PM
Tiny
MUSTANG87
  • MECHANIC
  • 261 POSTS
My brothers minivan was doing that to and changed everything u said also, at the end it was the injector.
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Friday, February 1st, 2008 AT 11:01 AM

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