Extremely rough running

Video, thought it could show how hard the engine was hitting but it did not, but you get the idea, lol.

Yeah but I do not know what kind of damage driving it like that would cause. Next time I drive it will be to the mechanic shop, lol. I was just kind of hoping to get some possible things it could be so I have some idea of what I could be walking into. So far among friends, the two most popular ideas are a vacuum leak or sensor either of which should not be much more than $100.00 to get fixed. As for the check engine light it is eighteen years old, haha it has been on since I got it. Only two known pre-existing issues is the belt tension-er pulley and a seal causing oil to burn when warm. The strong rich running smell supports sensor or a vacuum leak. The missing may just be due to the fact it needs a major tune-up. All new wires and plugs and everything, lol. The person who had it before me did not take very good care of it but it is still in good shape. Transmission, drive-train, and engine all still in great shape. Still have plenty enough get up and go left to light up the rear tires from a complete stop and if it is wet out spin them if I slam the gas at even forty mph. I knew before posting that a definitive diagnosis via forums would be next to impossible that is okay. Just looking for possible things it could be, lol. Tried Googling but none of them mention rough running while in motion only at idle. The severe chugging continues while driving and the vibrations are so bad they rattle things inside the cab of the car. My first thought was " I think it is only running on like two cylinders", but when I drove it or just rev it up there is no power lost. It just chugs really hard and hesitates before zooming off.

But yeah it drives. It is just really rough and when coming to a stop. I have to add power to keep it running until moving again. Then it does not try to shut off or even pull, it just chugs so hard it rattles everything inside the ancient cab of the vehicle, lol.

Took it in today, left cylinder head went bad or so I was told. I am a computer guy, mechanics are not so much my thing but he did show me the device used for checking compression and while they attempted to start it the needle did not move. It is not even worth fixing lol. The fix would cost more than the car is worth, haha. Provided they were not trying to snow me to get a lot of money on an expensive fix, lol.