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-   -   2003 ML500 - coolant leak from back of the engine (https://mbworld.org/forums/m-class-w163/586912-2003-ml500-coolant-leak-back-engine.html)

LukasBMW 05-24-2015 02:26 PM

2003 ML500 - coolant leak from back of the engine
 
Hello all,

I just picked up a 2003 ML500 for cheap due to a few issues.

The biggest concern is that the car has a significant coolant leak. The leak is coming from the back of the engine on the passenger side. Any ideas of what it could be?

Any recommendations for a side mechanic in the San Diego/mission beach area?

art_arev 05-24-2015 07:47 PM

It could be the overflow pipe. When you overfill the coolant tank the extra coolant gets pushed out from the overflow pipe which is on the right side.
It could be a broken/cracked hose.
You must locate the exact location of the leak

LukasBMW 05-27-2015 06:58 PM

Yeah, a cracked hose or even cracked expansion tank was my thought.

I don't think it's the overflow hose.

Does the M113 engine have anything else that could leak in the back? Does it have a "valley pan" gasket?

DrX 05-28-2015 12:19 AM

Lukas, don't you think it's time you changed your username? Now that you're on your third Benz, unless you're planning to downgrade in future?

LukasBMW 05-28-2015 01:47 AM

LOL. Good observation.

I actually have a 335i with mods. Picked up the ML500 because I practically got it for free and wanted a "beach car."

When the warranty on the 335i is up, I want to get back into an SL.

I actually had asked for a username change but it was never granted.


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