Turbo Wastegate Testing - Vacuum and Pressure Controlled | Tech Tip

In this video we demonstrate how to test a vacuum actuated and a pressure actuated turbocharger wastegate. For the vacuum actuated wastegate, ensure it is normally closed and watch the rod while applying a vacuum to verify its full range of motion. A properly functioning actuator should move smoothly and hold the vacuum without any issues.
Now, for the pressure actuated wastegate, we need to switch the nipples on our vacuum side to the pressure side, connecting it to the pressure actuator. Following the same principle, apply pressure and observe the rod's movement. The goal is to make sure it holds the pressure while remaining open. For this type of wastegate, it is normally closed, so when we release the pressure, the wastegate should return to its fully closed position.
By performing these tests on both types of actuators, you can ensure they are functioning correctly. This step is crucial in diagnosing any issues related to the wastegate's operation and overall turbocharger performance.
We hope this demonstration proves helpful in your future turbocharger wastegate testing endeavors. Stay tuned for more insightful tips!
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[@7seen396]

Thanks a lot for making our life easier Workshops they recommend to replace the entire turbo without even thinking where the problem is 😵‍💫😵‍💫 As simply it is not from their pocket

[@luisgustavoandrade2032]

Greetings sir! Could KZbin help me if is it possible to convert (or replace) when modding an actuator from vacuum type to positive pressure? (I'm willing to install an OM651 turbocharger into an old diesel, the original unit is vacuum operated). Thanks a lot for your attention!!!

[@megamac3898]

Thanks for the clear video and information, but I read that at Idle the waste gate would be partly opened to protect the turbo charger from unnecessary pressure, is that correct? Other question is it possible to know if the actuator are good or bad from from live data in obd diagnostic? Greetings from Austria 🇦🇹