2001 Chevy Cavalier How to test ignition spark plugs, wires

2001 CHEVROLET CAVALIER
143,000 MILES • 4 CYL • 2WD • AUTOMATIC
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LICA1961
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I brought my car to Autozone and they did a trouble code read. They gave me a code number (which I forgot) and told me that the no. 3 cylinder/piston is not working properly. I did a drop cylinder/piston test and the car gets way rougher when I take the lead out from the spark plug # 3. So does when I take each spark plug lead.
They said that it could be: Spark Plug, Spark Plug Lead/Wire, Ignition/Coil(s), Ignition Controle Module, or even the fuel pump.
How do I test these parts to see what is at fault?
Oct 10, 2008 at 11:14 PM
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