Valve cover

there is a pretty good gash on the top of the valve cover, will that cause problems and if so is there a way to repair it
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi There and thanks for writing in. The valve cover is a cover designed to protect the valve train components that require constant oiling and lubrication. There is a valve cover gasket in between the cover and the cylinder head to provide additional sealing to avoid oil leaking. The main concern with a valve cover that is not properly sealed is the leaking of oil. Due to the amount of moving parts (i.e. rockers, camshafts in some cases, etc.) there is a lot of oil that gets moved around underneath these covers. It is important to keep this oil inside the motor and avoid having it sloshed around and leaked out of the motor in the event of a damaged cover as you have described. I would suggest having a professional from YourMechanic come to your location to remove and replace your damaged valve cover.

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On average, it`ll cost you around $100 to $350 to replace the valve cover. You`ve to pay 30 to 50 bucks for parts and 70 to 300 dollars for labor fare.
The telltale sign of a valve cover gasket that has lost its seal is an oil-covered valve cover or a burning oil smell when the engine is running. As oil leaks from a valve cover, it can contact a hot exhaust manifold and burn. Smoke can then waft into the cabin.
Essentially, valve stem seals prevent oil from entering the combustion chamber from the cylinder head. A damaged seal can cause engine oil flooding that will lead to engine failure.
It is not recommended that you drive with a leaking valve cover gasket, as this can lead to overheating and engine insufficiency, as well as extensive engine damage.
Even though you will be fine to drive with a missing air valve cap, we recommend replacing it when you get the chance so that you can keep dust and debris out of your tires. Luckily, air valve caps are very easy and affordable to replace and can be found at chain auto parts stores and online retailers like Amazon.
The Valve Cover Gasket is made of rubber or cork, this seals the cover to the engine, keeping any oil from leaking out. If you are driving with a cracked or broken gasket, the oil will lead, your engine will not be properly lubricated, and then the engine can be damaged seriously.
If you have an engine oil leak that is coming from both valve covers then it would be recommended that you have both valve cover gaskets replaced at the same time to stop oil leaks and prevent repeating work at a later time to do the other valve cover.
The short answer is, yes. If your engine is losing oil, running the car for too long without an inspection and repair can cause permanent damage. If the gasket is worn out, it will leak engine oil and the top of the engine will be likely be covered in oil.
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.
Will leaking valve seals harm an engine? Not immediately and directly, however it does immediately and result in increased wear on the rods, increased oil consumption, and lower engine power. However you can run with worn seals for a very long time and it can be very expensive and time consuming to fix.
According to Fixr, the average toilet valve repair cost is between $75 and $200 to replace a flush valve or up to $400 to fix a constantly running toilet.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I have a 2001 Toyota Tundra 4.7 V-8. When replacing the valve cover gasket, what should I torque the valve cover back to when rein
ANSWER : The valve cover bolt is tightened to 60 inch pounds.

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2012 chevy cruze lt 1.4 valve cover vacuum leak. waiting on parts in the mail.
ANSWER : It is possible to temporarily seal air (vacuum leaks). Any method that best creates a seal can be used. In particular, RTV sealant which is flowable can be used to seal a non moving crack so long as the surface that you are applying the RTV to is oil and dirt free (otherwise the RTV wont bond). The only concern with such temporary (or even permanent) repairs is that you do not get any foreign matter in the engine through any crack that you are trying to seal. If you want the PCV valve and/or the valve cover replaced you can request PCV/valve cover replacement service and the responding certified mechanic will get this taken care of. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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Oil leak from lower valve cover
ANSWER : You didn’t say whether you have the 2.4L or 3.3L in your Hyundai, but neither of these engines have a lower valve cover. Could it be that you misunderstood the part the shop said needed to be replaced? Anyhow, it’s always good to have an oil leak repaired as soon as possible. However, it will be OK to drive your car until your finished moving, as long as you keep an eye on the oil level. Depending on the severity of the leak, you may want to check your oil as often as once a day. A good mechanic will clean the engine off, then put dye in the system to determine exactly where the leak is coming from. This ensures the correct repairs are made. YourMechanic can perform an oil leak inspection for you.

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Valve cover replacement? 2001 Mitsubishi Montero Sport
ANSWER : Hi there – manufacturers are using plastic for valve covers, intake manifolds, and other engine components more and more often for weight and expense savings. Unfortunately, with repeated heat cycles, some of these plastics become brittle, or warp and won’t seal properly. You may very well need to replace the valve covers for this reason, but it should not happen again during the life of your vehicle. For assistance, I would recommend a valve cover gasket replacement by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, and repair this problem.

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Do valve covers bend
ANSWER : Hello, thanks for writing in about your BMW 750i. I have worked on automobiles for many years and replaced many valve cover gaskets, and have never heard of someone using a ruler for anything related to that repair. However, it is possible for valve covers to warp causing oil leaks even with brand new gaskets.

If the BMW technician was using the ruler as simply a straight edge to show you that there is some warpage to your valve cover, this would make sense, because if the valve cover is not totally flat on the side that the gasket is installed, it will most likely not seal properly and cause a leak.

I would recommend having the valve covers replaced as well with new gaskets, and this should resolve the issue you are currently having. If you want to have this checked, a certified technician from YourMechanic can come to your car’s location to inspect the car and ensure the correct repairs are made.

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After changing leaky valve cover gaskets and oil, I’m getting a rattle under cover and oil light and buzzer is now on 2000 Chrysler Town and Country
ANSWER : Hello. If you are getting this light and noise then you have low oil pressure. I would drain the oil and change the filter as it is possible that you got a bad oil filter. If the problem persists then you may have a bad oil pump. This needs to be checked so that you do not have any engine damage.

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Turbo VS. Non-Turbo Valve Cover Gasket
ANSWER : Hi there. Looks like the gaskets are the same for the turbo and non turbo engines. I recommend asking the local parts store for to see a valve cover gasket for the non turbo engine and a gasket for a turbo engine and compare the two gaskets. If the gaskets are the same material and have the same design, the go for the valve cover gasket that will fit your budget. If you need further assistance with the valve cover gasket, then seek out a professional, such as one from Your Mechanic, to help you.

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After valve cover gasket replacement, compressor broke
ANSWER : Hi there. Thanks for writing in about your 2000 Lexus GS400. Compressors can go bad due to oil saturation. It is likely that the technician spilled additional oil on the compressor when replacing the valve cover. The technician may have dealt the final blow to the already weakened compressor if they did spill such additional oil onto it. Unfortunately there is no real way to prove if this was done or not. If you need to have this taken care of, a qualified professional, such as one from YourMechanic can take a look at the car and replace the compressor if necessary.

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