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You may also have a cam lobe or lifter that is wearing. Pay attention to the #1 cylinder, inboard intake lifter/ cam lobe. Listen there and tell me what you find with volume and intensity with a stethoscope on that part of the cam cover with the engine idling, warmed up.
If its louder there, I know what the problem is. Boxster engines eat that cam lobe and that lifter.
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Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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