I'm having an issue like this. Making a similar sound. At first the Service Engine Soon light came on so I stopped by my brothers shop. I did a scan and a "Random Misfire" code came up but it was in the history codes. I reset the Service light and started driving again. Next thing I know the light comes on again and was flashing. The engine now clucks like crazy like on the second video posted. It doesn't matter what gear I'm in. When I popped the hood the engine pops up about an inch everytime it clucks. I figure I'll start with the spark plug wires and spark plugs because I previously got the misfire code. Any advice if that's not the issue? Thanks!