With the car running, you can also pull the wire off of each plug one at a time to find out which cylinder isn't firing. Just be careful to not shock yourself. Once you figure out which cylinder isn't firing you can work from there.It could be an injector so another thing you might do is get a long screw driver, put the screw driver on the injector then put your ear to the handle of the screw driver to listen for to the injectors opening and closing. All of them should be making a fast, steady clicking noise. If you find one that isn't or seems to be out of synch, that is likely your problem.
If you need any large items shipped like engines or even front clips, I can help you out. Just go to AssociatedShippers.com and get a quote.
