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Your engine uses about as much air as it does fuel, and the air filter keeps dust and grit out of it. A clean filter protects engine parts and keeps airflow free. This guide compares the main filter types and explains when to replace them. Engine air filter and cabin air filter The engine air filter cleans the air going into the engine. The cabin air filter cleans the air coming through the vents into the cabin. They are separate parts with separ …

Spark plugs ignite the air and fuel mixture in every cylinder of a gasoline engine. When they wear out, the engine runs rough and wastes fuel. This guide explains the plug types, the signs of wear and how to replace them. What spark plugs do Each plug creates a spark across a small gap at exactly the right moment. Over time, the electrodes wear, the gap widens and deposits build up, so the spark gets weaker and the engine runs worse. Types of spa …

You do not need to be a mechanic to look after your car, but knowing the parts that wear out most often helps you spot problems early and avoid surprise bills. Here are ten parts every owner should understand, what they do and the signs they need attention. 1. Engine oil and oil filterOil lubricates and cools the engine, and the filter removes dirt from it. Change both at the interval in your manual. Dark, gritty oil or an engine that sounds loud …

The cooling system keeps your engine at the right temperature, and an overheated engine can be wrecked in minutes. A little regular care prevents most cooling failures. This guide explains how the system works and what to check. How the cooling system works The water pump moves coolant through the engine, where it absorbs heat. The hot coolant flows to the radiator, which releases the heat to the air, helped by the fan. The thermostat controls th …