What is a car engine overhaul?


Quick Answer

An engine overhaul is a comprehensive engine tune-up that involves removing and disassembling a vehicle's engine, testing all the components, cleaning and replacing parts as needed and then reassembling the engine. This is done to improve vehicle performance and prolong the life of the engine.

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Full Answer

Engines may receive a top overhaul or a major overhaul. A top overhaul covers only the engine parts inside the cylinder head, including the valves, spark plugs and fuel injectors. It is usually completed without removing the engine from the vehicle. A major overhaul is performed on all parts of the engine, including the pistons and drive train.

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