Smarter Engine Ground Testing with the Power Probe MAESTRO & App When diagnosing engine electrical issues, testing the engine ground under load is critical—but doing it solo can be a challenge. That’s where the Power Probe MAESTRO and its companion app change the game. 📡 With the MAESTRO connected directly to the engine block, you can monitor engine ground voltage remotely while cranking the vehicle—all from inside the cabin using the app. In this real-world test, Danny Sehmi shows how a poor e

🔧 How to use the Power Probe 4 Fuel Injector Test Mode 🚗⚡ Did you know the Power Probe 4 includes a built-in Fuel Injector Test Mode? It’s the perfect solution for diagnosing injector issues with speed and accuracy—demonstrated here on a Fiat 500 petrol engine by our go-to tech by Danny Sehmi. 👨‍🔬 Once you’re in Fuel Injector Mode, the Power Probe 4 gets straight to work. You’ll instantly see four live data points: ✔️ A pulse confirmation via LED ✔️ Injector on-time to measure duration ✔️ In