Skip the auto shop - Our mechanics make house calls

Q: Blowing oil through valve covers.

asked by on

318 engine blowing oil through valve covers, even at idle

My car has over 100,000 + miles
My car has an automatic transmission.

Hi there. Check the positive crankcase ventilation valve (PCV) and see if it’s plugged up. Also, check the engine oil and make sure that there is the proper amount of oil in the engine. Too much oil or a sticking PCV valve will cause the engine to build up too much crankcase pressure and blow out the valve cover seals. If you need further assistance with your leaks, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: my 1996 plymouth grand voyager 3.3 v6 ran fine all winter, june came the first hot day it stopped running, it was like it was runn

This sounds like it could be related to the emissions system. Something is overheating. It may not be the engine but a component of the emissions system such as a purge valve. This could prevent flow of the fuel or...

Q: Automatic transmission

Unless there is a check valve in the fitting on the transmission side (sometimes there is) then you have to retrofit it. There are aftermarket check valves available. You can contact a major transmission supply house and simply ask them...

Q: Recommendation and information on seal conditioners and synthetic oils

No, not to my knowledge. The problem with all kinds of sealers and engine oils is that they have all kinds of additives but no one ever tells you what the exact ones are. So you really can't compare. The...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.