Skip the auto shop - Our mechanics make house calls

Q: Oil leaking from valve guide

asked by on

I have blue smoke coming from the exhaust pipe. I believe it is oil leaking from the valve guide.

If the engine only smokes blue at start-up, the valve guide seals are to blame. If the engine smokes blue constantly, especially while revving the engine, the piston rings are bad. Both issues involve complex repairs that come at a high cost. You need to determine how much the car is worth to you to justify an expensive repair or possible engine replacement. All cars burn some amount of oil, but when you can see the blue smoke, it is an excessive amount. Monitor your oil level closely and keep it at the proper level, so long as you don’t let it run low, you may be able to squeeze some more life out of it. If you need assistance, YourMechanic has certified mechanics that can inspect and repair the oil issue.

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
  1. Home
  2. Questions
  3. Oil leaking from valve guide

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: What are the cause of my car going into limp mode and what can i do to fix it myself? 1998 Mitsubishi Eclipse

Hello - the first thing to do is to get the problem codes, whether the Check Engine light is illuminated or not. This will help you make repairs based on the real problem, rather than just throwing parts at it....

Q: My car struggles to accelerate at times, especially after making a complete stop and attempting to accelerate.

Check engine compression and intake vacuum to first rule out possible mechanical problems such as stuck or leaking valves. Among the causes of poor acceleration are clogged fuel injectors and/or inadequate fuel pressure/volume. When an injector is clogged it can...

Q: Window not rolling up or down

Hello. The most common cause of a window not working is a bad window regulator. Though in some cases it will be the window switch, fuse, or window motor at fault. I strongly suggest having one of our professionally trained...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...