There's no single "point gap" for a 1989 Ford 4-cylinder. The correct gap depends on the *specific* engine model. Ford used several different 4-cylinder engines in 1989 vehicles (like the 2.3L). The point gap (if it even uses points – most likely it uses an electronic ignition system) will be specified in your vehicle's owner's manual or a repair manual specific to your engine.
Important Note: Most 1989 Ford 4-cylinder engines used electronic ignition systems and *do not* have points. If your engine has an electronic ignition, the concept of a "point gap" is irrelevant. You'd instead be looking at things like spark plug gap. Consult your owner's manual or a repair manual for the correct specifications.
