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Post from Bosch! Many weeks ago, a viewer sent us Bosch spark plugs that he had bought online for 1.60 EUR ( • Bosch spark plugs for 1.60 €?? 🤔 Fia... ). And the plugs didn't last long. Bosch then contacted us and asked us to take a look at the plugs. And this is the result! A Ford Focus (1.6 TDCI, 85 kW) is running rough. The first cylinder is having problems. What's wrong here? The clue leads to the piezo injector. ---------------------- Click here to go to the webshop: https://die-autodoktoren.tv/ The Autodoktoren on Facebook: / dieautodoktoren The Autodoktoren on Instagram: / die_autodoktoren