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Old 07-05-2022   #2
Hib Halverson
 
Join Date: Jun 2005
Location: CenCoast California
Posts: 898
Default Re: I think I found the cylinder that is not running optimally

That plug is badly oil fouled. I'm not sure about what I saw in the second image. By chance is that the piston top shot through a bore scope?

In any event, you may have a problem with a valve seal or a broken ring.
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Hib Halverson
Technical Writer
former owner 95 VIN 0140
current owner 19 VIN 1878
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