Coolant leak 1986

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Jun 22, 2013 | 09:56 AM

rangepony69

Thread Starter

Instructor

Joined: May 2013

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From: Greensboro NC

Coolant leak 1986

Not sure where to go now.......I have a coolant leak under the engine on the right side. It only leaks when the engine has just been turned off, still under pressure and warm. No leak when cold or running....leak is small, about the size of a good pancake once the engine has been stopped. The heater box/suitcase is dry, leak appears to come from the union of the transmission and engine at the bottom of the right side just behind the right front tire. Strange huh?

Any help/thoughts would be appreciated.

Rangepony

Jun 22, 2013 | 10:57 AM

desertmike1

Melting Slicks

Joined: Aug 2008

Posts: 2,082

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From: Palmdale CA

You need to get your self a bright flashlite and trace it, it's either leaking down from above or from the back of the Block (Freeze plug)

Jun 22, 2013 | 12:30 PM

rangepony69

Thread Starter

Instructor

Joined: May 2013

Posts: 115

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From: Greensboro NC

Coolant leak

10-4...........I did that this morning and my first reaction was freeze plug..............wonderful news................

Thanks for your thoughts.

Jun 22, 2013 | 03:45 PM

lkl2005

Pro

Joined: May 2012

Posts: 519

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My 86 had a leak at the right rear corner of the intake. Good artificial light is good. Get it out there in the sun light and use your nose also.

Jun 22, 2013 | 04:24 PM

ch@0s

Le Mans Master

Joined: Oct 2008

Posts: 9,758

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From: Houston Texas

You can rent a pressure tester and look for the leak when its cold. The TPI is famous for leaking intake. My 86 and 91 were both leaking in the right rear . GL with it

Jun 22, 2013 | 05:15 PM

rangepony69

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Instructor

Joined: May 2013

Posts: 115

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From: Greensboro NC

Coolant leak

Thanks for all your responses. I'm going to clean the area in the right rear and see if I can see anything. I also need to clean/paint the valve covers so I'm thinking I may take it all apart and do it all at one time. Good thing I'm retired..............

Rangepony

Jun 22, 2013 | 11:13 PM

Cliff Harris

Race Director

Joined: Apr 2002

Posts: 10,036

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From: Anaheim CA

Check the steam line -- the small pipe and rubber hose that goes from the heater hose to the rear of the intake manifold on the passenger side. Mine had a pinhole leak in the bottom that was otherwise invisible. I only found it by accident when i happened to see water leaking in that area. It had been leaking for quite a while, based on the rust on the frame.

One of the heater hoses could be leaking.

The water valve on the heater manifold might be leaking.