Common Causes of Needing an Engine Overhaul

If you want to avoid catastrophic engine failure that will require a full engine rebuild or replacement, be sure to stay up to date with your scheduled auto maintenance. Proper maintenance will help ensure that you don't end up experiencing one of these 3 major causes of engine failure. If you do, be sure to get in touch with your mechanic to find out the best way to repair your vehicle.


Overheating happens when the cooling system fails to regulate engine temperature, allowing parts to heat up and work at hotter temperature than they are designed to. This usually happens because of some sort of coolant leak, either directly from the radiator or a hose connected to the system, or even the engine itself, should it crack. However other causes of overheating could include a faulty electric cooling fan, or a bad thermostat or a bad water pump. To keep the system working well be sure to have the cooling system flushed according to your vehicle manufacturer's recommendation.


Abnormal combustion inside the engine will produce excessive heat and pressure in the combustion chamber that can actually cause interior parts to melt or even crack the engine block. What is happening is the spontaneous combustion of fuel which produces the extreme heat. A knocking noise may also be heard. This generally happens because of the failure of the exhaust gas recirculation system. This system ensures a correct air/fuel mixture. However it can also be caused by low octane fuel, bad ignition timing, incorrect spark plugs or high engine operating temperature.

Improper Lubrication

Probably the most common cause of engine failure is improper lubrication, often because people forget to change their oil. Even if you change the oil on a regular basis, if you don't check other parts for wear and tear, you could end up needing an engine replacement for your car. The most common causes of engine oil starvation are not changing the oil and filter on time, a faulty oil pump or high mileage wear and tear, which results in an excessive gap between the main and rod bearings.

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