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Every week I teardown at least one failed, blown, or bad engine on this channel. Here are some of my past favorites:
Bentley/Rolls 6 3/4 Litre V8    • BROKEN BENTLEY / ROLLS ROYCE 6 ¾ LSe...  
Mercedes M278 4.6L BiTurbo V8    • Mercedes ML550 M278 BiTurbo V8 Engin...  
Hyundai/Kia Theta 2.4    • Always BLOWN UP? WHY?  Hyundai / Kia ...  
Kia Sorento V6 TOTAL DESTRUCTION!    • Taking "Blown Up Engine" To A New Lev...  

Today we tear down a 2.0L Nu G4NC Engine from a 2018 Hyundai Tucson. This GDI 4 cylinder produces about 164hp and is used in MANY Hyundai and Kia vehicles, and is also included in the classaction engine failure lawsuit which is currently ongoing. Apparently, this engine missed coverage for this and died at just 91K Miles. The carfax history shows relatively solid maintenance history and combined with such low miles, if you didn't know the history of these engines you'd think this was abuse.
Why do these engines fail? Why do they always fail the same way? What can be done to prevent it? Lets tear this one down and try to answer these questions.
Why am I doing this? My name is Eric and I own and run a full service auto recycling business called Importapart. Part of our model includes dismantling blown up, bad and core engines to salvage the good parts. We do not rebuild or repair engines, merely supply parts to those who do.

I really hope you enjoyed this teardown as always I love all of the comments, feedback and even the criticism. Catch you on the next one!

Eric