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Antifreeze dripping down the back of the engine

Tiny
RON VAN D
  • MEMBER
  • 2001 MERCURY MARQUIS
  • 4.6L
  • 152,000 MILES
I checked the heater hoses they appear to be dry. Where else could it be coming from? Also, are there freeze plugs between the engine an transmission?
Monday, July 15th, 2019 AT 10:45 AM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

The intake manifold is a common issue for this. The gaskets leak and it runs down the back of the motor.

You will need to look over the top of the motor with a pressure tester installed to see the leak.

https://www.2carpros.com/articles/radiator-pressure-test

Roy
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Monday, July 15th, 2019 AT 1:21 PM
Tiny
RON VAN D
  • MEMBER
  • 13 POSTS
Thanks. I think I have located the leak. It is the line that runs under the intake for the heater off the back of the water pump. It still means the intake has to come off to get to it. If you have any recommendations I would like to hear them.
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Monday, July 15th, 2019 AT 8:32 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The intake manifold has to be removed. It is a simple repair was at that point. The line is at the dealer parts.

Roy
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Tuesday, July 16th, 2019 AT 1:50 AM
Tiny
RON VAN D
  • MEMBER
  • 13 POSTS
Thanks for your help. I would have never have looked in that area had it not been for your information.
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Tuesday, July 16th, 2019 AT 9:35 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
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Tuesday, July 16th, 2019 AT 9:38 AM
Tiny
RON VAN D
  • MEMBER
  • 13 POSTS
I have one more thing to ask. The car had dexcool in it am going to drain the coolant do I still need to use dexcool or can I go with something else?
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Wednesday, July 17th, 2019 AT 4:07 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
If you are going to use something other than dexcool, you need to get all the coolant out of the radiator and block before changing the fluid. Make sure it is a 50-50 mix.

Roy
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Wednesday, July 17th, 2019 AT 4:14 PM
Tiny
RON VAN D
  • MEMBER
  • 13 POSTS
Okay, thanks Roy.
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Wednesday, July 17th, 2019 AT 6:30 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Roy
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Wednesday, July 17th, 2019 AT 9:08 PM

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