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I used to think the old school timing light was the only way to set ignition timing
For years, I insisted on using my vintage Sunpro light on every engine, thinking digital tools were just a gimmick. Then I worked on a 2018 Ford F-150 with variable cam timing in a shop in Phoenix, and the old method just couldn't give me the full picture. I finally bought a good scan tool that shows live data, and now I see the exact advance the computer is commanding. Has anyone else made the switch from purely mechanical checks to trusting the computer's data more?
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john_lopez29d ago
Right? @johnson.betty's buddy gets it.
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derek_ross28d ago
Man, tell me about it. I fought it too until a modern Dodge had me chasing my tail. The computer is adjusting timing faster than any light can show. My advice? Use the scan tool to watch the actual advance numbers, then check with the light just to verify the base mark hasn't moved. It saves so much time.
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