Q:

How can you tell if your car engine has seized?

A:

Quick Answer

Complete engine failure, unusual noises, low oil pressure, loss of power, misfiring, hard starting and overheating are all common signs of a seized engine. Acting on these signs by taking the vehicle to a mechanic or automotive professional is crucial to avoid potential long-term problems.

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How can you tell if your car engine has seized?
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Full Answer

The most common symptom of a seized engine is a complete engine failure. Vehicles with seized engines make loud clunking noises when turning the ignition. The vehicle’s electronics, heater and lights work, but the engine sputters and fails to start. Although the engine seizes and becomes inactive, the starter continues to crank the engine when the ignition is turned. The starter’s continued activity puts strain on the electrical components of the vehicle. This results in smoking and overheating of the electrical wires in the vehicle.

Seizing of the engine occurs when a primary component stops working. Seized engines often stem from an internal component, such as a piston becoming loose and lodging against another component. Engines seize for a variety of reasons, including rust accumulation for extended inactivity, excessive heat or mechanical problems. Inconsistent or diminishing engine performance, unusual noises and low oil notifications are common indicators that require attention. Although these symptoms do not always lead to engine seizing, they must be evaluated and addressed promptly.


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