The spark plug gap for a 1985 Ford F-150 depends on the engine it has. Ford F-150s in 1985 came with several different engines. You
must consult your owner's manual or a reliable repair manual specific to your truck's engine to find the correct gap.
Don't rely on a generic answer; the gap varies significantly between engines (e.g., a 300 inline-six will have a different gap than a 351 Windsor V8). Using the wrong gap can lead to misfires and poor engine performance.
