Skip the auto shop - Our mechanics make house calls

Q: Water in oil from drilling too deep

asked by on

I was drilling t-stat bolt hole and went too deep into the inside of the intake. Now water in oil, but no oil in water. I noticed water oil mix coming up under valve cover thru the ports in head. I can't afford even a used intake, can I seal that hole with epoxy or any other sealant? Also is there any chance the head gasket and intake gasket is OK just getting water in oil from drilling the hole? It's also a vortek.

My car has 13000 miles.
My car has a manual transmission.

If you use a good silicone on the bolt when you put thermostat back in you will seal the hole from more coolant getting into the engine oil. Once the oil is flushed out you should pressure test the cooling system to see if the head gasket, heads and intake are sealing properly. The components are very common to leak on this engine and will get coolant in oil. Corrosion can eat into the metal of these components and cause the leaks.

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!
  1. Home
  2. Questions
  3. Water in oil from drilling too deep

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: My temp gauge reads low, but I replaced the thermostat.

In order to properly test the cooling system you'll need to test the temperature at the temperature sending unit with a laser temperature tester or something equivalent. You'll also need a scanner to look at the reading to the ECM...

Q: engine overheating.

Hi there. When an engine is overheating your would need to check the coolant to see if its low or not the correct temperature rating. If the coolant is good and rated to the maximum temperature, then the radiator could...

Q: I have a flat tire and the jack point is rusted.

Hi. If you look about six inches to a foot behind the jack point, the body of the car is there and is safe enough to use as a jack point for the car. The car jack may not fit...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...