To get to the spark plugs on a 2003 Cavalier, the fuel rail needs to be taken apart and removed out of the way. Take a picture of this before removing it so that it can be put back the same way afterward. There will be fuel in the line so keep a bucket handy.
there are four spark plugs.
on the motor
under what appears to be the valve cover on top of the engine
Most likely it needs new spark-plugs.
4...under the coil cover
132 ft lbs. becarefull not to snap the plugs
Try changing spark plugs. Blow out dirt around plugs first.
Distributor cap & rotor button or spark plug wires may be bad. Coil could be weak.
Not really. If you remove the center cover on the top of the engine you'll see that there are spark plug "boots" that fit down on the spark plugs.
Pull the spark plug wires off each of the spark plugs. Blow out the wells where the spark plugs are with compressed air as dirt accumulates there. Use a spark plug socket with an extension to remove the plugs. Make sure to gap your new plugs to the proper spec which is in the owners manual. Install the new plugs, making sure when you thread them in with the socket that they do not crossthread! It can be costly to rethread these holes. Reinstall the plug wires in the correct sequence.
Depending on the plug, it is .050" for most plugs, except for the Denso premium plugs come pregaped at .035"Sparkplugs.com
Take the valve cover off and the plugs will be right under it