Top Dead Center (TDC) is one of the most important positions in an engine — but a lot of drivers aren’t sure what it actually means. In this Auto Terms Explained video, we break down what top dead center is, how it marks the highest point a piston reaches inside the cylinder, and why it’s crucial for engine timing, ignition, and proper mechanical alignment. Understanding TDC helps make sense of timing marks, distributor alignment, and why some repairs depend on knowing exactly where the piston i
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Top Dead Center (TDC) is one of the most important positions in an en…
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