Engine covers and engine blocks

Engine covers and crankcases on a scooter, motorcycle, or quad bike

On a scooter, motorcycle or quad bike, the engine cover is usually made of a durable, heat-resistant material such as aluminum or cast iron. It is held in place by a combination of bolts and gaskets that help seal the cover and prevent oil leaks. Some engine covers may also have vents or ducts with air filters to allow air flow and engine cooling.

It is important to regularly check the engine cover and gaskets for signs of wear or damage, as a leaking engine cover can lead to reduced engine performance and oil loss. If the engine cover is damaged or worn, it should be replaced to ensure that the engine is properly protected and running efficiently.

How can I tell if my engine cover is leaking?

There are several signs that may indicate a leaking engine cover on a scooter, motorcycle or quad bike:

Low oil level: If you notice that the oil level in your engine is consistently low, this could be a sign that oil is leaking from the engine cover.
Oil stains on the ground: Check the area around the engine for oil stains on the ground or on the frame. This may indicate a leak from the engine cover.
Smell of burning oil: If you smell burning oil while driving or when the engine is running, this could be a sign that oil is leaking from the engine cover and dripping onto hot engine parts.
Smoke from the engine: If you notice smoke coming from the engine, it may be due to burning oil from a leak in the engine cover.
Reduced engine performance: A leaking engine cover can lead to reduced engine performance and loss of power.

If you suspect that your engine cover, is leaking, it is important to have it checked by a mechanic as soon as possible. A leaking engine cover can lead to reduced engine performance, loss of oil and damage to internal engine components.

How often should the engine cover and gaskets be checked?

It is recommended to check the engine cover and gaskets during regular maintenance, such as oil changes. It is also a good idea to visually inspect the engine cover and gaskets for signs of wear or damage when cleaning your scooter, motorcycle or quad bike.

If you notice any signs of wear or damage, such as cracks, dents or missing bolts, it is important to have the engine cover and seals inspected by a mechanic as soon as possible. A damaged or worn engine cover and seals can lead to oil leaks and reduced engine performance.

It's also a good idea to check the torque of the engine cover mounting bolts in place with a torque wrench to make sure they are tightened to the correct specifications.

As a general rule of thumb, check the engine cover and seals at least once a year or every 8,000 kilometers, whichever comes first. However, it is also recommended that you check your scooter, motorcycle or quad's owner's manual for the manufacturer's suggested maintenance schedule, as it may vary depending on the model and use.

How do I know if I need to replace the engine cover?

There are several signs that may indicate that the engine cover on your scooter, motorcycle or ATV needs to be replaced:

Physical damage: If the engine cover is cracked, bent or otherwise damaged, it should be replaced.
Oil leaks: If you notice oil leaks coming from the engine cover, it may be a sign that the seals or gaskets are worn and need to be replaced.
Loose or missing bolts: If you notice that the bolts securing the engine cover are loose or missing, this could cause the cover to shift, potentially causing damage or an oil leak.
Reduced engine performance: A leaking engine cover can lead to reduced engine performance and loss of power, if you notice a decrease in engine performance it could be a sign of a worn engine cover
Age: The engine cover is exposed to heat, vibration and dirt, over time the material can degrade and lose its ability to protect internal engine components, if you have an older engine cover it is worth considering replacing it.

It is important to remember that engine covers can be expensive to replace, so if the engine cover shows signs of wear but is not leaking, it can be repaired. It is always best to consult a mechanic to determine the best course of action.