An Ignition Timing Light is a tool used to check and adjust the ignition timing of a gasoline engine. It helps ensure that the spark plug fires at the correct point during the engine’s compression stroke — which is essential for proper power, fuel efficiency, and smooth running. Here’s a quick guide 👇 ⚙️ What It Does The timing light flashes in sync with the spark plug firing. When aimed at the timing marks on the engine crankshaft pulley or flywheel, the marks appear stationary — showing when

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[Vintage cars from half a century ago] Explains how to use a 5-pole relay and a timing light. Impala