Q: Found oil leak when changing spark plugs

asked by on

I have owned my car for about four years now. When I went to do the routine maintenace yesterday - replacing the spark plugs, I found that all four spark plug sockets have oil leaks when I took out the boots. The plugs looked like they were in decent condition, and there was no gunk. The oil level seems fine. I'm wondering if this might be caused by a bad head gasket or valve cover. Would one of those cause this problem, and how much might it cost me to get it fixed?

Hi there. This is very common on your vehicle. This is caused by the valve cover gasket tube seals. These fail all of the time because they become brittle as the engine gets older. Once that occurs, they start to leak and allow oil to enter the tubes. I typically replace the gaskets and the coil boots along with the spark plugs so that I do not have to go into the same repair a second time. If you need to have this done, consider YourMechanic, as a certified mechanic can come to your home or office to inspect your oil leak. From there, they will be able to make the necessary repairs to have this issue resolved.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Found oil leak when changing spark plugs

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I cleaned the EGR valve but I'm not sure if it is working now

Yes, if you pressed on the diaphragm and it stalled the engine that means that exhaust gases were flowing through the EGR valve as intended. A good way to test the EGR valve in its entirety is to use a...

Q: What's makes the temperature hand goes up then down?

If you are referring to the engine coolant temperature gauge on the instrument panel, unless the gauge is misreporting the temperature, a likely cause of too low of an engine temperature is a cooling system thermostat that is stuck in...

Q: keep or junk

I would fix the drive shaft and continue to drive it after spending all the money on the transmission. If you need help with this, reach out to a certified technician who will be able to diagnose and replace your...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.