That was exactly my plan, unfortunately the leak didn't agree with the plan!
I also thought maybe it was leaking when it sat so I waited until after dinner
to have a look thinking it might have left a puddle but it didn't...
-Curt
Date: Thu, 10 Dec 2009 20:41:04 -0600
From: OK Don <okd...@gmail.com>
Subject: Re: [MBZ] Coolant loss
To: Mercedes Discussion List <mercedes@okiebenz.com>
Message-ID:
<437bc980912101841o7b90b88dne67c95252c9e4...@mail.gmail.com>
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I've had the best luck finding leaks by filling the system, getting the
engine up to operating temp, and looking for the stream of water while the
engine is still running.
On Thu, Dec 10, 2009 at 8:30 PM, Curt Raymond <curtlud...@yahoo.com> wrote:
> Took a look at my 240D tonight to see if I can figure out where the coolant
> loss is occuring. I filled it back up and went for a spin to warm it up.
> When I got back the only place I could definitely see coolant is from the
> overflow tube. I'd filled it right to the top so a little overflow seems
> quite normal to me.
>
> This evening after work when I checked it it was down below the top of the
> tubes and on the way to work the cabin heat wouldn't heat until the engine
> fully reached operating temp which is a standard sign on this car that the
> coolant was low. It needed about 2 quarts to be filled.
>
> I have 2 suspects:
> #1 the radiator cap. I replaced it in '04 I think, maybe '03. It looks fine
> but...
>
> #2 the little stub hose under the thermostat housing. It looks quite
> suspicious. IIRC its a strange size, anybody know it? The one there is
> really nasty, years of oil dripping on it haven't done it any favors...
>
> -Curt
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