WHY DOES CAR ENGINE SEIZE?

by Callyourmechanic
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Engine Seizure

Engine seizure is the locking up of engine. When the engine of a car seizes, the engine will not turn and the car will not start. Engine can seize while in motion or stationary. Sure way to confirm that an engine has seized is to try turning the crankshaft. If the crankshaft turns, the engine has not fully locked up or not seized at all but if it doesn’t turn, it means the engine has seized completely. Engine can seize to the extent that cost of repair could be as much as replacing another engine. In that case, it will be advisable to replace the engine instead of repairing. Is your car not starting and you think the engine has seized? Please, log on to www.callyourmechanic.com and call a mechanic to help check it out for you.

Causes Of Engine Seizure

Common Causes Are:

  1. Low engine oil level: leaks of engine oil could make the oil level go low to the extent of seizing the engine, especially if the driver did not notice the leakage. It is advisable to always check all the fluids in the vehicle to see they are at good level before driving.
  2. Oil sludge: Oil sludge is the gel-like substance formed in the engine as a result of irregular engine servicing. These substances have the capacity to block the oil pump. When the oil pump cannot pump oil to circulate the engine, tear and wear will set in and will eventually seize the engine. Apart from this, sludge formation in an engine causes a lot of harm. For instance, it damages sensors like OCV (Oil control valve) sensor and the rest. It also affects camshafts. In summary, oil sludge is an enemy to car engine.  Service your car regularly according to manufacturer’s specification to avoid sludge forming in the engine.
  3. Oil pump failure: oil pump can fail resulting in engine seizure.

Other Causes Include:

Overheating: When engine overheats for a period of time, there will be excessive expansion of engine components, causing friction, tear and wear and thereby damaging the engine. For example, piston could expand excessively and damage the cylinder wall, eventually seizes the engine.

Water in the engine: Water is incompressible and when it gets to the combustion chamber of the engine, the piston will not be able to compress it, resulting in bent connecting rods or even bursts piston and engine block. This situation is called hydrolocked engine.

Water usually gets into the engine when a car is driven on water flooded road. Damage will be less if the car is on low RPM (revolution per minute) but if the RPM is high during passing the flood, damage will be more. The damage could lead to engine replacement. I advise not drive your car in flood. Water can get into the engine through the air hoses. But if you do not have option, then drive at low RPM (AT YOUR RISK ANYWAY) 

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