Skip the auto shop - Our mechanics make house calls

Q: Losing engine oil fast

asked by on

My car engine is losing oil. I have to fill up in every two weeks. I have checked if oil is not dripping through sump plug and I found the underneath to be dry. On top of the engine there is a pool of oil that is forming there and it looks like the source of leak is a pipe that looks like a breather to me. Also, my spark plugs threads are oiled. Am I losing oil through these two places? Is it normal for a car which have travelled 236000km to lose oil this way? Is there a remedy to this?

Phakamani

My car has 236000 miles.
My car has a manual transmission.

A: Hello there, many different faults will cau...

Hello there, many different faults will cause your 2009 Toyota Yaris to leak oil. From your description of the leak it sounds like the most likely is the PCV valve. When the PCV valve fails it can cause the pressure in the crankcase to increase and oil to become sucked through the intake, fouling the spark plugs in the process. For further help, have a qualified technician, such as one from YourMechanic, inspect the oil loss and replace your PCV valve if needed.

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・Save up to 30%

Get a quote

What others are asking

Q: Can I put a blow off valve in my car?

If I am understanding your question correctly, you are wanting to install a blow off valve on a non-turbo charged car. A blow off valve is typically only necessary in turbo charged applications as it's function is to to release...

Q: Chevy 5.3l - Lost oil pressure, why?

Hello - since you didn't appear to be leaking oil in a significant way (busted oil line, hole in the pan), I suspect that the oil pressure relief valve may have been stuck in the "relief" position. Some of the...

Q: I have a leak in the coolant system that I have narrowed to I believe is the water inlet tube off of the lower radiator hose.

First off, I would say it would be best to pressure test the cooling system to verify where the coolant is coming from. With the complexity of repairs to the cooling system on this vehicle, it may be worth the...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...