What causes engine stutter in a Mazda 626?

Engine stutter in a Mazda 626 can be caused by several factors, including a malfunctioning ignition system, such as worn spark plugs or faulty ignition coils. Fuel delivery issues, such as a clogged fuel filter or failing fuel pump, can also contribute to stuttering. Additionally, problems with the engine's air intake system, like a dirty mass air flow sensor or a vacuum leak, may disrupt proper combustion, leading to stuttering. Regular maintenance and diagnostic checks can help identify and resolve these issues.