What is the timing setting for a 1997 geo metro with a 4 cylinder engine?

There should be a label under the hood that tells you what the setting is. If you don't have that label, you can call your local Suzuki dealer and they can tell you. If you have to guess, I'd try around 6 to 10 degrees before top dead center. Or you can just do like me and set it by ear. If it starts with little effort and you don't get any pinging or valve rattle under heavy load or going up hills, you've got it pretty close.