how can i tell the difference while driving whether it is a clogged injector, or a missing spark plug?
thanks in advance.

 

The best thing you can do is to get a scantool, find out which cylinder is misfiring & take it from there. Most likely it will be an ignition problem.

 

take a look at the spark plugs and compare them to each other as well as to a guideline. haynes manuals have them on the last page with different conditions for spark plugs

 

When injectors go bad sometimes you will smell fuel.

 

well, i finally got under my car. apparently i work tooooo much. it has only taken me 8 months. #6 wire appeared to be cut right at the bottom of the boot. i will never again take my car to a shop for any type of repair that i can not fix myself. i owe a lot of respect to the people on this forum that take the time from their day to hit the site and give some friendly advise. it makes me proud to be an american!