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alexiskai · 03-15-2026, 05:09 PM

If you have a stock head, with the plugs out and a flashlight you can easily look through the spark plug hole and see the positions of the valves and pistons. An endoscope makes the job easier but it's not required.

03-15-2026, 05:09 PM	#2
alexiskai Senior Member Join Date: Apr 2018 Location: Mebane NC Posts: 3,179	Re: Valve adjustment If you have a stock head, with the plugs out and a flashlight you can easily look through the spark plug hole and see the positions of the valves and pistons. An endoscope makes the job easier but it's not required.