1995 Cadillac Concours Tune up

Check your engine compression before you do it, its not gonna do you good if its not to par.

Not really much you can do for a tune up. Replace the spark plugs and wires, if they are original. Replace the fuel filter, PCV valve, clean the throttle plate, check/replace the air filter, and replace the fuel filter if it has been some time. There is no adjustments or settings that can be made.