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Why a Simple Spark Test Still Matters in the Age of Complex Vehicle Diagnostics
Spark plug testers remain a narrow but useful diagnostic tool, especially when drivers want to isolate ignition problems without replacing expensive parts unnecessarily.
Key Takeaways
- Spark plug testers can help narrow ignition problems before expensive parts are replaced.
- Inline testers are presented as the simplest and most useful option for most users.
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DT Editorial Team··via jalopnik.com