2004 Chevy Suburban spark plug missing

Tiny
06BOBBER
  • MEMBER
  • 2004 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 115,500 MILES
Just changed spark plugs due to mileage. After changing them engine started to miss like it had a foweled plug. I triple checked everthing and instalition and plugs seem fine. Was wondering if I caused a problem by unpluging #1 coil during instalation while battery was still hooked up.
Wednesday, April 9th, 2008 AT 2:19 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,251 POSTS
Did you check for spark from that coil? Proceed as shown in this video!
https://www.2carpros.com/car_repair_video/test_engine_ignition_system.htm
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Wednesday, April 9th, 2008 AT 2:24 PM
Tiny
06BOBBER
  • MEMBER
  • 2 POSTS
Yes it has spark.
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Wednesday, April 9th, 2008 AT 2:45 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,251 POSTS
First thing you need to do is have the codes read, Autozone does it free, Post the results with the code number(s). Even if the service engine light is not on, there should be freeze frame data stored.
If it won't make it to Autozone, buy a cheap scanner, they can be had for 30-40 dollars, a good investment, since they cover all cars sold in the USA from 96 on.
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Wednesday, April 9th, 2008 AT 3:04 PM

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