What Causes Misfiring in Hyundai Tucson Spark Plugs and How Can I Fix It?

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What Causes Misfiring in Hyundai Tucson Spark Plugs and How Can I Fix It?

My Tucson’s engine sometimes misfires, especially when accelerating. Could worn o r faulty spark plugs be the reason? How do I diagnose spark plug-related misfires, and what’s the best replacement option available in Pakistan?

Gari Specialist asked on 14 Jun 2025 12:06:56 pm

1 Answer

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Gari Master - on 14 Jun 2025 12:09:03 pm

Misfires happen when the spark plug fails to ignite the air-fuel mixture correctly. Common causes include worn electrodes, carbon buildup, incorrect spark plug gap, o r poor-quality spark plugs. In Pakistan, inconsistent fuel quality and dusty roads can worsen these issues. Misfires cause rough idling, loss of power, and increased emissions. To fix this, inspect the spark plugs for wear o r fouling, check and adjust the gap if needed, and replace them with good-quality plugs recommended for your Tucson. Also, ensure ignition coils and wires if applicable are in good condition since they affect spark delivery. Regular tune-ups and fuel system cleaning can reduce misfires. Using fuel additives to clean injectors may also help improve combustion.