Help with coolant leak on 2004 mustang GT - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 01-05-2018 Thread Starter
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Help with coolant leak on 2004 mustang GT

Hey everyone, I just noticed I have this coolant leak near the crossover on my 04 GT. I have attached pictures of where the leak is.

Do I need to replace the whole manifold? Or is there a gasket between the crossover and the manifold I can replace? It doesn't seem to leak when the engine is running, only bubbles after the engine is turned off.

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post #2 of 6 (permalink) Old 01-05-2018
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It looks like the crossover has its own seals.
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2006 GT- Airaid Race CAI, 62mm BBK TB, SR Performance UD Pullies, FRPP Hot Rod Cams, CMDP's, Excedy Stage One Clutch and lightweight flywheel, Pacesetter Long Tube Headers with matching O/R H-Pipe & MBRP Street Axlebacks, Lito 91 Octane Tune
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post #3 of 6 (permalink) Old 01-05-2018 Thread Starter
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It also seems like it only leaks after I turn the engine off, at which point it starts bubbling out. Does anyone know what that would indicate?
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post #4 of 6 (permalink) Old 01-05-2018
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Pressure & temperature in the system increases for a while after the engine is turned off. Its possible the pressure momentarily exceeds the threshold of the aged seal until enough of the pressure is relieved/reduced.

2006 GT- Airaid Race CAI, 62mm BBK TB, SR Performance UD Pullies, FRPP Hot Rod Cams, CMDP's, Excedy Stage One Clutch and lightweight flywheel, Pacesetter Long Tube Headers with matching O/R H-Pipe & MBRP Street Axlebacks, Lito 91 Octane Tune
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post #5 of 6 (permalink) Old 01-05-2018
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Quote:
Originally Posted by theyyoyo View Post
It also seems like it only leaks after I turn the engine off, at which point it starts bubbling out. Does anyone know what that would indicate?


When the engine is shut off, temp increases (because there is no cooling) and pressure increases as well........all normal and yes, need to pull the take to determine where the leak is and repair it.

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post #6 of 6 (permalink) Old 01-13-2018
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Just took mine in for a diagnostic and they found coolant in one of the cylinders. It's causing the misfire.
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