Is a valve cover gasket the same as a rocker cover gasket?

Asked By: Armine Glicksman | Last Updated: 14th June, 2020
Category: automotive auto parts
4.4/5 (999 Views . 44 Votes)
A gasket (rocker cover gasket, or valve cover gasket in the US and Canada) helps seal the joint between the rocker cover and the rest of the engine. Failure of this gasket can cause oil to leak from the engine.

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Moreover, can I drive my car with a leaking valve cover gasket?

Yes, as long as the amount of oil leaking is small, and there is no leak onto hot engine parts such as the exhaust manifold, it is safe to drive your car until you have an opportunity to fix it.

Likewise, how much does it cost to replace rocker cover gasket? Rocker Cover gasket replacement can cost between $200 and $800, depending on the location of the rocker cover and if the inlet manifold needs to be removed to allow access.

Furthermore, what does a rocker cover do?

The rocker cover is that part of the engine, which protects the timing gear and the valve control gear. As these components are lubricated by means of engine oil, the rocker cover also prevents it from coming out. The contact point between the rocker cover and cylinder head is secured by means of a gasket.

Do valve cover gaskets need sealant?

Although valve cover gaskets don't necessarily need sealers or cements, it's a common practice to glue the gasket to the valve cover. There are a number of sealant choices, too. For this application, Permatex No. 1, RTVs or Permatex High Tack gasket sealant work well.

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What happens if you don't replace valve cover gasket?

When this occurs, the gasket can lose its integrity and leak, potentially causing cosmetic issues like leaking oil, or drivability problems and reduced engine performance. If not replaced by an ASE certified mechanic in time, a bad valve cover gasket can lead to complete engine failure.

Can a bad valve cover gasket cause check engine light?

Problem Description
The valve cover gaskets may leak oil into the spark plug wells, shorting out the spark plugs, causing a misfire, and illuminating the Check Engine Light. Commonly the spark plugs and ignition coils or wires will require replacement, along with resealing the valve cover to correct this concern.

How do you stop a valve cover gasket from leaking?

That means BlueDevil Oil Stop Leak can act as a valve cover gasket sealer and stay in your engine oil until your next oil change and will not clog or harm your engine in any way. BlueDevil Oil Stop Leak will restore dried, cracked or shrunken seals to original size and shape, allowing them to reseal and stop your leak.

How much does it cost to replace a valve cover gasket?

The average cost for a valve cover gasket replacement is between $248 and $321. Labor costs are estimated between $193 and $245 while parts are priced between $55 and $76. Estimate does not include taxes and fees.

What are the symptoms of a bad valve cover gasket?


Symptoms of a Bad or Failing Valve Cover Gasket
  • Burning oil smell. When a valve cover gasket is pinched, worn out or cracked, compressed oil from underneath the valve cover will find a way to escape.
  • Valve cover is dirty and leaking oil.
  • Engine is low on oil.
  • Engine is running rough and causing misfires.

Can bad valve cover gasket cause rough idle?

If it allows a major airflow through the crankcase ventilation system, and other parts of that system are also compromised, then yes, it could. Especially in the days of the old PCV and vacuum line—sort of like when one pulls the valve off that line—the engine then leans out—and runs rough at idle.

Can a valve cover gasket leak cause overheating?

Valve covers leaking is only going to cover the engine in oil. As long as you have enough oil, its not an issue. The overheating sounds like a pinhole leak, or the radiator is partially clogged. If you can, pull over when it gets hot and see if you can see any pinhole leaks spraying.

How long should a rocker cover gasket last?

When running your vehicle, the valve cover will have to do its job and keep the oil from leaking out. Most of the gaskets on your car last anywhere from 20,000 to 50,000 miles.

How do you know if your Headgasket is blown?


How To Tell if a Head Gasket Is Blown:
  1. Coolant leaking externally from below the exhaust manifold.
  2. White smoke from the exhaust pipe.
  3. Bubbles in the radiator or coolant overflow tank.
  4. Overheating engine.
  5. White milky oil.
  6. Fouled spark plugs.
  7. Low cooling system integrity.

Why do BMW valve cover gaskets leak?

Oil leaks occur more frequently on vehicles with over 60,000 miles. A common cause of BMW oil leaks are the valve cover gaskets The oil pan gasket is also a likely cause of a BMW oil leak, and will require removal of the front suspension in order to be replaced.

Can I drive with a missing valve cover bolt?

Yes, you can drive the car to the shop with a bolt missing. I Thimk you are looking at the head bolt diagram and values. This is the valve cover!! Yup, if you insist on using newton meters for a torque value, you should be using 5.0 to 8.8 - that's 5.0 to 8.8, not 50 to 88.

Do valve covers make a difference?

As the name implies, a valve cover is just a cover; its function is to protect the innards from the outside elements. It has no direct impact on engine performance unless the original valve cover was damaged or cracked to begin with.

What is a tappet gasket?

A valve cover gasket seals the valve cover to the top portion of the engine cylinder head. The gasket prevents motor oil from leaking out as it travels around the camshafts, rockers and valves. In addition, many spark plug ports are sealed by the valve cover gasket.

What is a rocker cover made of?


In today's cars, the seal is made up almost entirely of rubber or plastic. In modern cars gaskets are mainly made of rubber or plastic. The valve cover should be always connected to the cylinder head. But the most important is the gasket to function and to be hermetic.

Is a valve cover leak serious?

In short: NO. Oil leaking from the valve cover(s) will not harm you engine and is very common as cars (and their gaskets) age. That said, and as other users have mentioned, it is a problem to drive a car with low oil. Valve cover leaks are usually very minor but your oil level is critical and should be monitored.

What is a rocker cover leak?

One sign of a rocker-cover gasket that has lost its seal is the smell of burning oil when the engine is running. Oil often drips down onto the hot exhaust manifold, resulting in smoke that wafts into the cabin. A rocker cover can leak oil while the engine is running, but not while the engine is stopped.