Q: Air sucking into oil dipstick

asked by on

I lose oil a lot. Have back pressure through oil dipstick and oil cap. When I take the dipstick out or unscrew the cap, not much loss of power.

My car has 110000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. If the crankcase is building up pressure that will not equalize, then you have a clogged crankcase ventilation system, such as the crankcase air filter may be bad. Have the PCV valve and air filter crankcase tube filter changed as required. Check to make sure there is no blockage in the PCV system and that the engine does not have oil sludge build up in the engine for lack of oil changes.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed, such as replacing the PCV valve or crankcase vent filter.

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
  1. Home
  2. Questions
  3. Air sucking into oil dipstick

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: There is an unidentified knocking sound by my feet while driving

It sounds like the flex plate between the engine and transmission is making the noise. The flex plate could be loose or cracked, making a constant knocking sound, and you can feel it on the floor by your feet. You...

Q: Startup difficulty after filling the gas tank

Hello. If this started right after getting fuel, then you may have gotten bad gas. It sounds like the fuel might be mixed with something else. If the fuel is fine then the fuel pump may be failing. If the...

Q: Error code P0139.

Hello, you are going to have to take your car to the dealer. There is a Technical Service Bulletin (TSB) 18 033 06. This TSB will refer you to having the software updated in the engine PCM and transmission control...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.