The timing light will flash each time the spark plug fires, illuminating the timing marks. Activate the timing light: With the engine running, press the trigger or activate the timing light according to the instructions specific to the Innova 5568a model.You may need to use a flashlight or mirror to locate the marks. These marks indicate the timing degrees and are usually located near the bottom of the engine, at the front or rear depending on the design. Aim the timing light: Point the timing light towards the timing marks on the harmonic balancer or flywheel/flexplate.Allow the engine to reach normal operating temperature. Make sure the transmission is in neutral or park and the parking brake is engaged. Start the engine: Start the vehicle's engine and let it idle.1 spark plug cable and that the arrow on the clamp is pointing toward the spark plug. Also, make sure the inductive pickup clamp is properly connected to the No. Connect the red clip to the positive terminal of the vehicle's battery and the black clip to the negative terminal. The Innova 5568a timing light has three connections: red for positive (+), black for negative (-), and the green adapter is only for reading dwell angle. Open the hood and locate the ignition coil or distributor, depending on your vehicle's ignition system. Prepare the vehicle: Park the vehicle on a level surface and ensure the engine is turned off.To use the Innova 5568a timing light, you can follow these steps: Note: The 55a are the same timing lights and operate the same way. Using the Innova 5568a timing light on a 1968 MGC. The explosion forces the piston to retreat as the exhaust valve opens to allow burnt fumes to escape through the exhaust. The spark plug fires as the piston reaches its optimal position which is combustion. As the piston head moves upward, the gas and air are compressed. As the intake valve opens, air and fuel are drawn into the chamber. Four-Cycle Stroke refers to the four positions a piston is in at any given time which is Intake, Compression, Combustion, and Exhaust. Usually, the only vehicles that need a timing adjustment are classic cars with a designated four-cycle stroke. The Four-Cycle Stroke of an Internal Combustion Engine Most modern vehicles have an electronic ignition system, which means that an internal computer adjusts the timing automatically. This doesn't always mean a vehicles timing needs to be adjusted. How to use a timing light How Do I Know if My Car’s Timing Needs Adjustment?Ī vehicle that isn't running in time will show signs of a rough idle, pinging, loss of power, or possibly a check engine light.
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