Vehicle randomly lose power and intermittently starts 'bucking'?

This sounds like a typical engine misfire, but we should run the codes to see what comes up. You can get a code scanner from Amazon for about $20.00.

Here is a guide/video to show you how:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a scanner link:

https://amzn.to/3Qi1SS6

This will tell you which cylinder is having the issue. I have also included how to change out the spark plugs in the diagrams below.

Manufacturer and type .................... NGK: FR5AP-11
Thread size (diameter, pitch, length) mm .................... 14, 1.25, 19
Spark plug gap mm (in) .................... 1.0 - 1.1 (0.039 - 0.043)
Electrode .................... Platinum

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Please do I want to help you get this fixed.