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

spark plug analysis

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Old Feb 18, 2006 | 02:18 PM
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From: in my skin, ben!
spark plug analysis

Ok got my old plugs pulled. No strange colors but I do have some black, cruddy oily stuff around the bottoms of the housing.

My guess is this is from blowby, which the car has an ever so slight case of. Runs good, no stumbles or anything like that - I'm just curious.

110k miles

thoughts?
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