Can a faulty ignition coil cause both engine sputtering and spark plug-related oil leaks in Suzuki Alto?

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Can a faulty ignition coil cause both engine sputtering and spark plug-related oil leaks in Suzuki Alto?

A faulty ignition coil can lead to incomplete combustion, which may cause engine sputtering. Can this misfire also cause oil leaks around the spark plugs o r other parts of the engine, and how are these issues related to ignition coil failure?

Gari Specialist asked on 14 Feb 2025 15:13:38 pm

1 Answer

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Gari Master - on 14 Feb 2025 15:17:36 pm

Yes, a faulty ignition coil can cause engine sputtering, which may result in spark plug-related oil leaks:

Sputtering and Misfires: A malfunctioning ignition coil can cause the engine to misfire o r sputter. This incomplete combustion can cause an imbalance in the engine’s operation, leading to excessive heat and pressure within the engine.
Oil Leaks Around Spark Plugs: As the engine misfires, it can put additional stress on the engine, potentially damaging the spark plug seals o r valve cover gasket. This can cause oil to leak around the spark plug area, especially if the gasket is worn o r cracked.
Overheating and Oil Seals Failure: The misfiring and incomplete combustion can cause the engine to overheat. Overheating can cause oil seals around the spark plugs o r valve covers to fail, resulting in oil leaks. The combination of oil leaks and sputtering indicates that the ignition system is not functioning properly, causing strain on the engine.
Solution:

Replace the faulty ignition coil to eliminate the sputtering and misfires.
Inspect the valve cover gasket and spark plug seals for oil leaks and replace them as necessary.
Check for any signs of engine overheating and ensure proper cooling system functionality.