yes
i change the spark plugs on my car but they keep popping out
The answer is not which one, but how many. Most engines probably won't run if 1/3 or more of the plugs are removed.
Broken spark plug wires will keep almost any car from starting.
The car is either using oil or the gasoline is set to rich.
Loose spark plugs would result in a loss of compression. This would make starting difficult and if the engine ran at all it would do so badly.
Water around the outsides of the spark plug may keep the car from running due to poor spark plug wires, but the engine should still turn over.
It's a good idea. Spark plugs keep your engine happy and will make sure you have no trouble starting your car. Also, if you do it yourself, you want to make sure they are 'pre-gapped' or make sure you know how to gap them yourself.
How long spark plugs last depends on the brand of spark plug and the condition of the car. In a well maintained car, some spark plugs will last from 3 to 7 years.
Old spark plugs can make a car misfire, run rough, and not fire at all.
The same way you gap spark plugs for any car that uses spark plugs.
It is important to replace old spark plugs to keep a car engine running well. To replace them disconnect the battery, remove the cables, remove the old spark plugs, replace with the new spark plugs, replace the cables in the correct order, and connect the battery.