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What do pistons have to do with degreeing a camshaft? Plenty, because piston timing has everything to do with proper valve timing. consider what happens when the piston reaches the top of the cylinder with either of the valves open. Valve and piston timing have everything to do with each other and safe engine operation. We check the piston for correct top-dead-center (TDC) while checking valve timing events. View Related Article
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