No bad spark plugs have nothing whatsoever to do with oil pressure. The oil light comes on when there is low or no oil pressure. Causes are engine low of oil. Check the oil level. Can also be the oil pressure sending unit is defective. Replace it. Lastly the oil pump may have failed. Do not drive this car with the oil light on. Tow it in for repair if necessary.
Yes
No
Yes, it can cause check engine light to come on. Reasons are multiple - anything from air/vacuum leak, spark problems etc. to major failure.
A spark plug that is causing a misfire is one of many reasons for the check engine light to come on.
the cause of this indicates one or more spark plugs,and/or coils need replacing
No, not unless your connect the plug wires wrong or one of the new spark plugs was bad.
Smaller tires should not cause the check engine light to come on. Smaller tires will cause the speedometer to be off.
No, low gas cannot cause a Check Engine light to turn on. There would have to be a problem within the engine or the engine wiring for that light to come on.
Yes it can.
Running out of gas my certainly be a cause for the check engine light to come on. It could also be an assortment of other issues.
No, it will not.
The oil level will not cause the check engine light to come on.See related question below.The oil level will not cause the check engine light to come on.See related question below.