5 Signs You Need to Replace Worn Engine Mounts

The primary purposes of an engine mount are to secure an engine into machinery and to absorb any shocks and vibrations when the machinery is operating. The anti-vibration properties of engine mounts are essential for preventing damage to the engine and for improving operator comfort (where applicable). But what happens when engine mounts need replacing? And how do you know when they need to be replaced? We answer both of these questions in this post.

What Happens if I Don’t Change my Motor Mounts?

No matter the quality of engine mounts, they begin to wear down after usage and eventually require replacement. Not replacing an engine mount that is past its prime can inflict damage to the engine, cause discomfort for operators and potentially be a safety risk if the engine isn’t secured.

How long do motor mounts last?

Usually, engine mounts should last between at least 5-7 years depending on the application, but we recommend getting them checked over regularly when the vehicle is being serviced, or when any other work is being carried out. 

When to replace engine mounts

Being aware of these different signs of a worn engine mount will help you to identify when they need replacing:

1.     Increased Vibrations

If you start your engine and notice that it is making more of a noise than usual, and can feel more vibrations than usual, this is a key sign of a worn engine mount that may need replacing. If an engine mount is damaged, its anti-vibration properties weaken. An increase in vibrations leads to the engine making more of a sound than usual – something that can be extremely damaging to an engine if it continues for a long time.

2.    Rocky Start

Upon starting a machine, you may notice an excessive lurch that doesn’t feel or sound healthy. This is a common indicator of a worn or damaged engine mount. This lurch often steadies into a constant vibration, but you may then also experience a lurch when turning the ignition off.

3.    A Bumpier Ride

Often, an engine mount that needs replacing can cause a jolt when changing gears on an attached transmission. This jolt or thump can also be noticeable when travelling at faster speeds due to the engine working harder. If your machine doesn’t feel as smooth as usual, this can often be down to a damaged engine mount.  

4.    Impact Noises

A worn engine mount can often lead to ‘clunks’ and ‘bangs’ within its surroundings/engine bay. This is as a result of the engine moving around more than normal and making contact with other components, which in turn can cause impact sounds that become quite noticeable.

5.    Visual Wear

With use, the metal part of an engine mount does change in appearance. However, if you can see any significant corrosion, cracks or warps to the part, excessive wear will likely be occurring to the rest of the mount. If you notice any cracks or flaking to the rubber aspect of an engine mount, this can potentially limit its performance depending on the severity of the cracks and the route cause. The effectiveness of engine mounts relies on their form and shape; any changes to this can be damaging to the engine. If you do notice any of these signals, you should look into replacing engine mounts as quickly as possible.

Five reasons why engine mounts need replacing

There are many reasons why your engine mounts may need replacing, some of the most common include:

  1. Incorrect installation of the mounts
  2. Ageing and weathering overtime
  3. Driving techniques that can damage the vehicle’s parts, e.g. over-revving the gears and improper use of the clutch
  4. Accident involvement which has caused damage or moved the mounts
  5. Fluid leaks onto the mounts

If you experience any of these signs or suspect any of the reasons above may be relevant to your vehicle, it’s best to get the engine checked out and consider replacing the engine mounts.

At GMT Rubber, we are market leaders in engine mount technology. Our experience allows us to identify the right engine mounts for your needs. Contact us today if you would like any more information or assistance.

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