What Causes a Valve Spring to Break

Valve springs break due to fatigue and overheating. Fatigue occurs when the valve spring is constantly compressed and released, causing it to weaken over time.

Overheating can also cause the valve spring to break due to the metal becoming brittle and weak. Valve springs are integral components of a combustion engine that is responsible for the smooth operation and movement of the engine valves.

When valve springs break, they can cause serious engine damage and costly repairs. Fatigue and overheating are two common causes of valve spring failure. Fatigue occurs due to continuous compression and release of the valve spring, which causes weakening over time.

Overheating can cause the valve spring metal to become brittle and susceptible to breaking. Preventative measures, such as regular maintenance and checking valve spring pressure, can help prevent valve spring failure

Overview Of Valve Springs

Valve springs are components of combustion engines that work to prevent the valves from closing completely. They consist of tightly coiled metal wires that compress and decompress, allowing the valves to open and close. These small but important parts play an essential role in the engine’s functioning, as they keep the valves from hitting the engine’s pistons.

In short, they maintain the timing of the engine’s internal systems. If a valve spring breaks, it can cause significant damage to the engine’s overall functioning. A broken valve spring can occur due to several factors. Common causes include overheating, vibrations, age, or excessive stress over time.

Any of these issues can weaken the spring to the point that it breaks. Therefore, it is crucial to maintain and replace these springs regularly to ensure your engine runs smoothly.

Causes Of Valve Spring Breakage

Valve springs are critical engine components that help regulate airflow into the engine. A valve spring that breaks while the engine is running can result in serious engine damage. One common cause of valve spring breakage is fatigue failure. This can occur when the spring is used for too long or if it undergoes excessive stress.

Overloading failure, on the other hand, can occur due to high rpm or a heavy valve train, while abrasive wear failure can occur due to contaminants within the engine oil. Finally, corrosion failure can result from exposure to corrosive substances or prolonged exposure to heat.

Regular engine maintenance and proper installation of springs can prevent valve spring breakage from occurring.

Symptoms Of Broken Valve Spring

A broken valve spring is a common problem that can cause a range of issues in an engine. If a valve spring breaks, it can cause the engine to misfire, which can result in rough idling and poor overall performance.

In some cases, the engine may even lose power. Another symptom to watch out for is valve train noises. If you notice any of these issues, it is important to have your engine inspected by a professional mechanic as soon as possible.

A qualified mechanic will be able to diagnose the issue and make any necessary repairs to get your engine back up and running smoothly.

Prevention Of Valve Spring Breakage

Valve spring breakage can occur due to several reasons. Regular maintenance is the key to avoiding breakage. High-quality parts selection is crucial in ensuring the longevity of valve springs. Proper installation of valve springs is essential to prevent breakage. Over-revving can cause valve springs to break, so it should be avoided.

Overheating of the engine can also lead to breakage. These simple steps can help prevent valve spring breakage and prolong the life of your engine. Regular maintenance and attention to detail during installation are essential for avoiding costly repairs. With the right care, you can ensure that your engine runs smoothly for years to come.

Frequently Asked Questions Of What Causes A Valve Spring To Break

What Are The Common Causes Of Valve Spring Breakage?

The most common causes of valve spring breakage are fatigue, overload, and wear and tear.

Can A Weak Battery Cause Valve Spring Failure?

Yes, a weak battery can cause valve spring failure by not providing enough power for starting.

What Are The Symptoms Of A Broken Valve Spring?

The symptoms of a broken valve spring are loss of power and acceleration, rough engine idle, and engine misfires.


Valve spring failure can be a major headache for any vehicle owner. This tiny component plays a crucial role in keeping the engine running smoothly, and when it breaks, it can cause significant damage to the engine. By now, you should have a good idea of the possible causes of a valve spring breakage and how to prevent it from happening.

Regular maintenance and inspections, proper lubrication, and avoiding high rpms are all essential. You should also be aware that sometimes, despite our best efforts, breakages still occur, and when they do, it’s always best to replace the entire set of valve springs rather than just the broken one.

By following these guidelines, you can ensure a smoother running and longer-lasting engine, without the headache of a valve spring breakage.