27 results for Engine Valve Cover

What is a Valve Cover？

A valve cover, often called “rocker cover” or “cylinder head cover”, is a crucial component that protects the engine’s valve train. Mounted on top of the cylinder head, it functions as a protective housing over internal parts, like rocker arms and camshaft. So, you can see it’s commonly made from durable and reliable materials—cast aluminum, steel, or composite plastic.

What does a Valve Cover do？

A valve cover serves two main purposes: to protect the engine’s internal parts and to keep oil inside the engine. Its solid cover protects internal parts from debris. Plus, a properly fitted gasket between the cylinder head and valve cover creates a tight seal.

What are the Symptoms of a Bad Valve Cover Gasket?

In most cases, a faulty valve cover typically begins with a worn or damaged gasket, which causes oil leakage. Common oil leakage issues include：

1. Rough engine operation.
2. Reduced engine performance.
3. Engine misfires caused by oil contamination.
4. Burning oil smell.
5. Oil leaks around the cover or on the ground.

Poor-quality valve covers with limited heat or vibration resistance can deform over time. This may compromise proper sealing and crankcase ventilation, leading to abnormal airflow and potential backflow.

Can I Drive my Car with a Bad Valve Cover？

It may be possible to continue driving for a short time if you regularly add oil to compensate for the loss. However, it's not recommended as a long-term solution. Insufficient oil may reduce proper lubrication, causing more wear as you drive normally. In more serious cases, it may lead to the engine overheating.

Can I Replace the Valve Cover myself？

Replacing a valve cover can be a straightforward DIY job for many car owners. The hardest part is usually finding the valve cover and removing it,

Shop Quality Valve Covers at HYR

If you‘re looking for a durable, direct-fit valve cover, HYR Valve Covers fit popular vehicles such as Chevy Cruze, Honda Civic, and Accord. Buy a complete valve cover assembly and enjoy free shipping and 1-business-day processing.

FAQ

How Much Does a Valve Cover Gasket Replacement Cost?

It may cost $200-$600 totally, varying by your car’s make and model. In most cases, the repair involves changing the valve cover gasket, which costs $10-$40 for the part itself. However, labor accounts for most of the total cost. On specific vehicles, gasket replacement requires removing the engine components like the intake manifold, increasing labor cost.

How do I Maintain Valve Covers?

Watch for a failing valve cover symptoms, and replace parts when needed. In addition, developing good maintenance habits can help extend the cover’s lifespan and protect overall engine performance.

As oil leakage and dirty buildup are the core factors that restrict the engine, it’s recommended to inspect the valve cover every year or six months. Clean off any visible buildup and replace the worn gaskets to prevent further engine damage.

Can a Bad Valve Cover Gasket Cause Loss of Power?

Yes. A faulty valve cover gasket may allow oil to leak and gradually contaminate the spark plugs. When spark plugs become oil-soaked, they can not fire properly. This leads to engine misfire and reduces engine power.

How to Replace the Valve Cover Gasket?

If you confirm oil leakage from the valve cover, you can replaced separately with a properly sized gasket. A general replacement process may include the following steps:

1. Removal preparation

Check your vehicle’s service manual and remove any block access the valve cover, like hoses or brackets. Then remove the valve cover bolts.

1. Remove the valve cover

If the cover is stuck, gently tap around the edges to help loosen it. Take care not to drop bolts or debris into the engine.

1. Remove the old gasket

Carefully lift off the old valve cover gasket.

1. Apply sealant if required

Sometimes a valve cover replacement needs a small amount of RTV sealant as it’s vehicle-specific design or material.