How can faulty spark plugs lead to engine sputtering in my Suzuki Cultus?

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How can faulty spark plugs lead to engine sputtering in my Suzuki Cultus?

I’ve been noticing that my Suzuki Cultus sputters intermittently while driving. Can faulty spark plugs be the culprit, and how do they contribute to engine sputtering?

Gari Specialist asked on 20 Mar 2025 13:23:58 pm

1 Answer

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Gari Master - on 20 Mar 2025 13:27:08 pm

Faulty spark plugs can cause engine sputtering because they are responsible for igniting the air-fuel mixture in the engine’s cylinders. If the spark plugs are worn o r damaged, they may fail to deliver a proper spark, leading to misfires and sputtering.

How Faulty Spark Plugs Cause Sputtering:

Weak o r Inconsistent Spark: Worn-out spark plugs may produce a weak o r inconsistent spark, preventing the proper ignition of the air-fuel mixture. This leads to incomplete combustion and engine sputtering.
Misfires: If one o r more spark plugs are faulty, the engine may misfire, causing it to sputter and run unevenly.
Increased Fuel Consumption: Faulty spark plugs can also result in incomplete combustion, which decreases engine efficiency and leads to higher fuel consumption.
How to Fix:

Replace Spark Plugs: Inspect the spark plugs for wear o r damage and replace them with new ones. Ensure the spark plug gap is correctly set to the manufacturer’s specifications.
Check Spark Plug Wires: If the wires connecting the spark plugs to the ignition system are frayed o r damaged, they should be replaced as well.
What to Do:
Replace faulty spark plugs and check spark plug wires. Make sure the ignition system is in good condition to prevent sputtering.