What Causes Water Inside Car Spark Plugs?
1 Answers
Water inside spark plugs is mainly caused by the following factors: Severe engine overheating leading to cylinder cracking and coolant leakage into the cylinder. Damaged engine cylinder head gasket allowing water into the cylinder liner. Cylinder liner cavitation causing water ingress when the engine is off. Vehicle wading through water, allowing water to be sucked in through the air filter. Worn connecting hoses between the intake manifold and air cleaner permitting water entry. For engines like Cummins equipped with air coolers, cooler leakage. Worn seals in water-cooled turbochargers. Damaged spark plugs may exhibit these symptoms: Hard starting, reduced power, excessive emissions, increased fuel consumption. Spark plug replacement procedure: First, open the hood and remove the engine's plastic cover. Detach the high-voltage distributor wires, marking each wire's position according to cylinder numbering to avoid confusion. Then use a spark plug socket to remove the plugs sequentially, checking for external debris like leaves or dust during removal - ensure thorough cleaning. Next, insert new spark plugs into the holes, hand-tightening them for several turns before final tightening with the socket wrench. Finally, reinstall the high-voltage wires in the correct firing order and secure the cover plate.
