If your 92 Toyota Camry was running fine yesterday then you when tried to start it today all it would do is turn over what should you do?

find the egr valve, its a 3" round thing attached to the intake manifold or plenum. on top it looks a little like an upsidedown dish with a vacuum hose coming out of it. try tapping on the side with a screwdriver handle. this may free it up and allow you to start the car. no guarantees though.