Black residue on piston |
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Black residue on piston |
914-Kazoo |
Aug 17 2022, 06:56 PM
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#1
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Newbie Group: Members Posts: 45 Joined: 19-August 20 From: Kalamazoo, MI Member No.: 24,609 Region Association: Upper MidWest |
1974 Porsche 914 2.0 liter - just purchased this spring
I have pulled my engine to get body painted. With engine out I'm changing out items to eliminate oil leaks. One item is push rod O rings, when I pulled spark plugs I noticed oil residue on all 4 plugs. Ran borescope into each cylinder and saw a black residue on top of piston heads, all 4 cylinders. When I measured clearance on valves, I couldn't fit a 0.002 feeler gauge. So clearance appears to be way too tight. Can someone give me some ideas what to look for? Or what else I should check. |
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