LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Read my spark plug for me...

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Old 05-20-2003, 03:21 PM
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96z
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Read my spark plug for me...

Im by no means an expert of reading plugs...to tell the truth its my first time.

The puck is grey and the ver tip of it is black,
The "arm" is greyish white and black where it meets the threads,
The insulator is the very slightest tinge of brown
The "rim" of the plug where the threads start is coated black and sooty...

These are autolight 106's gapped at .050
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Old 05-20-2003, 04:03 PM
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Re: Read my spark plug for me...

Originally posted by 96z
Im by no means an expert of reading plugs...to tell the truth its my first time.

The puck is grey and the ver tip of it is black,
The "arm" is greyish white and black where it meets the threads,
The insulator is the very slightest tinge of brown
The "rim" of the plug where the threads start is coated black and sooty...

These are autolight 106's gapped at .050
all i know is black means running rich, greyish white means running lean, brown is the color you want
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Old 05-20-2003, 04:07 PM
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Any Pics?

The bottom of the tip and the bottom of the threads will carbon because they do not conduct spark.

The formerly white porcelain on the tip should appear golden brown to greyish brown.

Your plug sounds fine,but pics would be nice.
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Old 05-20-2003, 04:10 PM
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96z
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I could snap a couple right now but cant post them on the board ofcourse. Id be happy to email them...
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