I've had Mitsubishi hydraulic tensioners weaken over time. Time the engine, get about 2 trips out of it before timing falls off to the point where it won't run anymore. Not so much to cause damage, unless you consider being unable to take your date home from that concert on the far side of town, damaging, and then having a buddy help you push the car past members of the band to stash it in the Hilton parking lot so it won't get towed before you can get back to it after work the next day.

Sorry to hear about this news. Irritating speed bump.