chevrolet nubira combi lpg engine damage after 70000tk

Hello, I have a big problem my Chevrolet Kombi which I bought about 2 years ago with 16000TKM has an engine damage at 70000tkm. The car is 3.5 years old so it’s supposed to be no longer a warranty but you have to let it go?The car is a checkbook and I had no problems in the inspection even 2 weeks ago, and everything was great! Would be nice if you could help me. MFG