What Causes Bent Pushrods?

When it comes to engines, there are many intricate parts working together to make everything run smoothly. One such component is the pushrod. But what happens when a pushrod gets bent? In this article, we will explore the reasons behind bent pushrods and why they can cause trouble for an engine. So, let's dive in and unravel the mystery of bent pushrods!

Before we delve into the causes of bent pushrods, it's essential to understand what they are. In an engine, a pushrod is a metal rod that connects the camshaft to the valve. Its purpose is to transfer the motion from the camshaft to open and close the valves at the right time. Now that we’ve established what they are, what causes them to bend?

One common cause of bent pushrods is engine overheating. When an engine becomes too hot, the metal components, including the pushrods, expand due to thermal expansion. If the engine exceeds its designed operating temperature, the pushrod may bend as it struggles to accommodate the increased length caused by expansion.

Another factor to look for is valve adjustment. Proper valve adjustment is crucial for the smooth operation of an engine. If the valves are not adjusted correctly, it can lead to excessive force being applied to the pushrods. Over time, this added strain can cause them to bend. Therefore, regular maintenance and ensuring the valves are properly adjusted are vital for preventing bent pushrods.

While not the most common reason, don’t overlook engine misfiring as a culprit. When an engine misfires, it means that the combustion process in one or more cylinders doesn't occur as intended. This can create abnormal pressures inside the cylinder, putting excessive stress on the pushrods. Over time, this repeated stress can cause them to bend. Addressing engine misfires promptly and identifying the underlying causes is crucial to prevent damage to the pushrods.

While rare, sometimes bent pushrods can occur due to human error during installation or manufacturing defects. If a pushrod is not installed properly or if it has defects from the manufacturing process, it may not be able to withstand the engine's regular operation. This can lead to premature bending or failure.

Bent pushrods can be a headache for any car owner, causing disruptions and potential damage to the engine. In this article, we explored some common causes of bent pushrods. By understanding these causes, vehicle owners can take preventive measures and ensure their engines run smoothly and reliably. Remember, regular maintenance and attentive care can go a long way in avoiding bent pushrods and keeping your engine in top shape!

Written by Ferber's Automotive & Body Shop