Bad gas, fouled plug(s), engine out of time, vacuum line leak or clogged.
Was it missing and sputtering before you changed them? If no, then you could have got the firing order mixed on the distributor. Maybe if you didn't replace the wires also one became more damaged while removing it. If yes, maybe its your fuel, or injectors, and you need to add a bottle of cleaner to your gas tank.
You need to check compression on #6.
Sputtering is almost like a person spitting. The car runs but it doesn't have full power, could actually sound like someone spitting. Missing is when there is a consistent and constant slight jerking or vibration. Unless it is really bad it is hard to feel.
Time for a tune up.
A missing lug nut can be quite dangerous for anyone who is driving. This means that the wheel is not as tight as it should be and it can come off especially when one is driving at high speeds.
could be a leaking vacuum hose or missing vacuum system cap
Driving a car with two missing lug nuts is not recommended. The lug nuts are crucial for securing the wheel to the hub, and missing them can lead to wheel instability, increased stress on the remaining lug nuts, and potential wheel detachment while driving. This poses a serious safety risk for both the driver and others on the road. It's best to replace the missing lug nuts before driving the vehicle.
There is a shield that prevents water from getting on the PS belt. It is missing or damaged. Also check to see if the belt is properly tensioned.
Depends what your country is.Re-Ask with the missing information.
Missing information: How fast are you driving?
Electronic transponder microchip in key is bad or missing.
You are driving with an invalid registration. That means you can get a ticket.