Oil leaking from valve guide mitsubishi 1996 oil 3000gt v...

Q: Oil leaking from valve guide

asked by on February 03, 2016

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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

My car shakes or vibrate at a stop

Hi there: Unfortunately, neither of those three error codes are associated with a component that is causing your vibration issue. The P0135 is related to the O2 sensor, and P0421 and P0401 are related to catalytic converter sensor issues. I...

I had the water pump replaced due to a leak. What would cause the engine to overheat now?

This can be caused by a number of things such as low coolant levels, a clogged radiator, or a failing coolant fan switch. As you may know, the coolant fan switch helps to maintain the proper coolant temperature by turning...

Car Battery completely depleted for no reason

It sounds like you may have a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator charges the battery while the engine runs by generating amperage and recharging the battery while the engine turns...

Related articles

How Long Does a Differential / Gear Oil Last?
The The differential is normally located at the rear of your vehicle and underneath the car. It is essential that it stays lubricated with differential or gear oil for it to work properly and your vehicle to go smoothly down...
Why Do Cars Have Different Oil Change Intervals?
Car oil change intervals depend on the make, model, and year of the car. The correct type of oil and how the vehicle is used makes a difference too.
How to Read a Motor Oil Label
Read an oil label to know the right type of oil to use in your car. Some new engines require synthetic oil, while older engines use conventional oil.