This 1995 Buick Riviera has only 27k original miles on the odometer!
The owner has been battling with a MISFIRE, and finally dropped it off at a local shop.

Let's pinpoint the root cause of the misfire and make a 100% guaranteed recommendation for repair. Don't see this kind of failure every day...

IVAN'S PICOSCOPE WAVEFORMS:
https://drive.google.com/drive/folder...

Enjoy!
Ivan