Skip the auto shop - Our mechanics make house calls

Q: water getting into sump

asked by on

Head removed and skimmed Refitted new gaskets When topping up with water it is going into sump and mixing with oil Is it cracked block or oil cooler

My car has 76000 miles.
My car has a manual transmission.

A: It isn't necessarily a cracked head or ...

It isn't necessarily a cracked head or block. There are other places that water can get into the oil. One that is often overlooked is the oil cooler. Many of the VW engines have a "black Box" oil cooler fitted to the oil filter housing, it passes coolant through a matrix around the oil passages as the oil goes into and out of the filter. Of course that only happens when the engine is running. If you are getting coolant in your oil while filling it and the engine is not running, I wonder if you may have installed the wrong head gasket. There are a number of different variations on that head gasket and if someone sold you the wrong one, it may fit, but there might be some coolant passages that don't line up the same. I know it's not good news, but the head has to come back off to check this. If you've had enough of this job, you can contact Your Mechanic. They can send a technician to your home to check out your car and advise you on what needs to be done.

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: fuel leak under hood

Hi there: Without being there to physically inspect your Mazda, it's impossible for us to tell you what is causing your fuel leak. If it's with the fuel rail however, you should take the time to replace the entire rail,...

Q: Car cuts off when put in drive, doesn't go backward - 2007 Chrysler Pacifica

Hello. A common fault with your vehicle is the torque converter clutch not releasing properly. This causes stalling when shifting to Drive or Reverse. If you need someone to come to your car, a mobile expert from YourMechanic can come...

Q: Car wobbles

Hi, check the rim and see if it is damaged at all. You may have hit the rim and the body of the car will be fine. The wheel however is misaligned, especially if the steering wheel is wobbling a...

Related articles

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...
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...
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...