Spark plug/ ignition coils layout

Tiny
AUKWORD1
  • MEMBER
  • 2004 INFINITI G35
  • 120,000 MILES
Hello, I was replacing my valve covers and gaskets and seem to have misplaced the ignition coils on the driver side of my engine. The numbers that used to be on there are deteriorated and no longer exist. Is there a way to describe how they come off the wire harness and match to each coil? My engine seems to misfire, bog out then stall.
Monday, June 11th, 2012 AT 2:34 AM

4 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
The coils does not matter and they are not marked for each cylinder. What matters would be the installation and wiring. Ensure everything is plugged in correctly and no sockets are loose.
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Monday, June 11th, 2012 AT 5:07 PM
Tiny
AUKWORD1
  • MEMBER
  • 3 POSTS
But my question is within the wiring, is there a way to tell which plug goes to which coil off the wire harness?
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Monday, June 11th, 2012 AT 5:10 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Under normal circumstances the wires should fit into each cylinder nicely due to there lenght. You should not fail reinstall them correctly but if the wire harness insualations have deteriorated, there is a possibility you can reinstall them out of position.

You would need to use wht wire color to determine which is for which. Check the diagram.
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Monday, June 11th, 2012 AT 5:18 PM
Tiny
AUKWORD1
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Thank you
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Monday, June 11th, 2012 AT 5:52 PM

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