Coolant leak into engine

ROBERT MILLER2

MEMBER
2007 FORD F-150
4.6L
V8
2WD
AUTOMATIC
200,000 MILES

I have a small amount of coolant getting into my engine. I thought it was the radiator. I changed it out and I’m still getting a leak from somewhere? Any ideas on how it’s getting into engine?

Tuesday, April 26th, 2022 AT 7:58 AM

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

If the coolant is getting into the engine / mixing with engine oil, that is usually caused by a failed head gasket.

Do me a favor. Take a look through this link and let me know if it helps and what you find.

https://www.2carpros.com/articles/head-gasket-blown-test

Let me know if you have additional questions.

Take care,

Joe

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Tuesday, April 26th, 2022 AT 2:14 PM

ROBERT MILLER2

MEMBER
2 POSTS

I have been afraid that it might be a blown gasket? The only reason I believed it might be something else is became I can drive it 200 miles and it doesn’t run hot? It doe’s loose coolant but that’s all it?

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Wednesday, April 27th, 2022 AT 6:36 AM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Is there any evidence of white smoke from the exhaust? Do any of the other symptoms listed in the aforementioned link mirror what you are seeing?

If you are losing coolant, the next thing I would suggest is to check engine compression to determine if there are one or more cylinders that are weak. Also, the spark plugs may have a grayish powdery appearance on the ground strap.

Here is a link that explains how to perform the compression test:

https://www.2carpros.com/articles/how-to-test-engine-compression

Let me know what you find.

Take care

Joe

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Wednesday, April 27th, 2022 AT 6:25 PM