Engine Sputtering When Pressing the Gas Pedal at Highway Speed: Causes and How to Diagnose Each One
Engine sputtering under acceleration at highway speed is most commonly caused by insufficient fuel delivery, either from a weakening fuel pump that cannot maintain pressure at high flow demand or from clogged fuel injectors that restrict flow under high throttle, though ignition failures under compression load and air metering faults are also frequent culprits that […]