Incorrectly setting timing can result in catastrophic engine failure. Distributors are obsolete and have been phased out by ignitions like the popular coil-on-plug system found in many dual overhead-cam engines.Īuto repair and timing changes should only be performed by trained automotive technicians to avoid permanently damaging your engine. The drop in timing light quality is likely attributable to the decline of distributor-based ignition systems in modern engines in favor of electronically controlled ignitions that use information from crank angle sensors to determine when current should be transmitted to the spark plugs. The 5568 is particularly appealing because it has tachometer, dwell, and voltage read-out functions, which just add to the information you have available to make your repairs. There are still some good options like the Innova 5568 Pro and the Generic F04823 which both offer advancing and retarding settings with easy-to-read displays, durable leads, and potted electronics. In general, the quality of timing lights has suffered in recent years. They're consistent, precise, and durable, and both have an easy-to-use interface and easy-to-read LCD.Īdded the Generic F04823 and the AB Tools SPR01. Our top picks for most users remain the Innova 5568 Pro and Innova 3568. MSD has been a top aftermarket manufacturer for decades, and you can trust just about any of their products. If you want a fixed, pistol-grip timing light, the Actron CP7527 and PMD Products Xenon Spark Checker are both affordable and effective, but for full-time commercial use, consider the MSD Ignition 8992 instead. Both were relatively poorly constructed pistol-grip types. The only changes made were the removal of a couple generic brands that got poor long-term reviews for durability and reliability.
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