What Does an Engine Overhaul Refer to?

[LondonLee]

An engine overhaul refers to the complete disassembly of the engine and related components, breaking down the entire engine structure, replacing damaged parts, and then reassembling the engine. The entire process is quite complex. An overhaul is necessary when internal engine components are worn or malfunctioning, requiring the engine to be completely disassembled to inspect which parts need replacement. Additionally, all related components must be disassembled and thoroughly cleaned, including the engine block, attached radiator, oil circulation parts, etc. After reassembly, the engine requires a break-in period for testing. Vehicles that have undergone an overhaul should only be driven at low speeds during the break-in period and should avoid aggressive driving. An engine overhaul is a highly technically demanding project, typically taking about a week to complete. Therefore, it is essential to operate the vehicle properly in daily driving to avoid causing excessive damage to the engine.