[header] How to check compression on a first generation mitsubishi eclipse [title] Gather the tools required to complete the compression test. [step] You will need a ratchet, spark plug socket, and a compression tester which you can easily rent from any auto parts store. You will also need some sort of repair manual, haynes, etc. 
[title] Once all tools are gathered, find a place in which you would be performing the compression test, driveway, garage, etc. [step] As well as the vehicle in which you would be doing the test on.