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Old Jul 20, 2020 | 06:14 PM
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Plastic Chips in Head

All,

Today I pulled my valve covers to clean and paint them and adjust the valves. I found plastic chips (black, hard plastic with a circular pattern) in the oil return holes at the front and back on both heads. I have fished out all I can but I am sure there are still some in there. I cannot figure out the source. Any suggestions?

Bill
 
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Old Jul 20, 2020 | 06:21 PM
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Possibly valve stem seals, the umbrella type that get old, hard, cracked and fall off?
 
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Old Jul 20, 2020 | 06:56 PM
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Possibly. I will look into that.
 
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Old Jul 21, 2020 | 08:08 AM
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I agree, old brittle valve stem seals
 
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