See if one of your local auto supply stores (AutoZone, Pep Boys, etc.) has a tool loaning program. Some do and you can use the tools for free if you leave a deposit. Get a compression test kit. All you do is disconnect the ECM wire (so the engine will turn over but not start), remove your spark plugs, screw in the supplied hose w/ fitting and turn the engine over a few times using the key in the ignition. The gauge on the other end of that hose will hold the highest reading which is what you want to record before moving on to the next cylinder and doing the same thing. I believe the commonly accepted values are that all cylinders should be within 10-15% of each other.