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      01-08-2024, 07:55 PM   #1
sub7m19
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Drives: BMW X5 E53
Join Date: Jan 2024
Location: SoCal

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How to know when Valves are closed

Hi, I am looking to time-cert my spark plug hole that has degraded threads since my spark plug won't tighten. Moreover, is there anyway to know when the intake and exhaust valves are fully closed? I heard that getting chips in there or in the cylinder can be really bad. Any tips would be greatly appreciated!
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