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Just changed sparkplugs from who knows when

Tiny
ANONYMOUS
  • MEMBER
  • 2003 CADILLAC CTS
  • 130,000 MILES
Just changed sparkplugs from who knows when. I installed Autolite Iridium and now it mis-fires, Why? Please Help Our Family This Holiday Season. Need our car to go to the Mission for Christmas.

uch Thanks Harry.
Monday, December 24th, 2012 AT 1:00 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Get the code for us. You may have a bad coil or a connection.

Did you check the gap on the plugs?

Roy
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Monday, December 24th, 2012 AT 1:02 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Did you gap the plugs? Are you sure you didn't get the electrode dirty or bump it when installing the plugs? If there is a misfire. The computer should pick up on it setting the check engine light. Then you can scan the computer to see what cylinder is missing. Then remove that plug and check it.
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Monday, December 24th, 2012 AT 1:03 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Roy:
Sorry I keep answering the ones you already got. It shows that they still need answered when I do it. Sorry. Have a nice Christmas.

Joe
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Monday, December 24th, 2012 AT 1:04 AM

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