Simple way to test turbo wastegate operation in 1.6HDi (Peugeot, Citroen, Ford, Volvo, Mini)

If you get underboost or overboost or cannot feel the turbo working, here is how to test a small part of the turbo, i.e the wastegate. The wastegate on the 1.6HDi turbo (non variable geometry type) is there to relieve pressure when the turbo gets spinning above a certain point and/or generates boost above certain threshold. The wastegate in 1.6HDi engines (non variable geometry type, 90bhp) is generally in the opened position (engine off). Once the engine start running the vacuum pump creates vacuum and through the turbo boost solenoid pulls the diaphragm in the wastegate, which in turn pulls the rod to the actual wastegate inside the turbo. Therefore, the wastegate gets closed and the turbo starts spinning. There are several scenarios where the wastegate can cause underboost or overboost and these are covered in the video. The video shown has the following part numbers: TD025S2-06T4 P/N 9682881380 S/N 078253120 MHI 49173-07506 If you find this video useful, buy me a coffee: https://www.paypal.com/paypalme/moremolecules #HDi #TurboFailure #HDiTurbo Disclaimer: Use the information provided in this video at Your Own Risk. More molecules provides this video for informational purposes only and assumes no liability for any damage or loss incurred as a result of the use of the information or tools presented in this video. The information provided here may contain inaccuracies and more molecules cannot guarantee the correctness or reliability of the content.