My 85 300D was doing the same thing. I discovered the bendy line from the
drivers side block to the heater line had a crack in it. It would only have
a notable leak when coolant was full. I kept filling it up every couple of
days before I left for work and would not see any leaks. I finally filled
it when it was hot, I think I had the heater running, and noticed the leak.
I loosened the cap and ordered a new hose from Gary. All is well now.
Michael E. Esh
231 894 5505
> On Jun 9, 2015, at 2:57 PM, Andrew Strasfogel via Mercedes <
mercedes@okiebenz.com> wrote:
>
> The funny thing is, I discovered the leak b/c the car was over heating
> (usually it runs cool). I popped the hood and saw the short hose was
> oozing coolant, so I topped it up - took nearly a gallon of H2O through
the
> filler tank.
>
> Now that the radiator coolant level is back to normal, the hose no longer
> drips. WTF???
>
> On Tue, Jun 9, 2015 at 1:54 PM, Curt Raymond via Mercedes <
> mercedes@okiebenz.com> wrote:
>
>> Careful too because some of the MB hoses are not the same diameter at
both
>> ends. Dimitri's '78 240D has a heater hose that I spent an hour
carefully
>> stretching into place because to get the small end right meant the big
end
>> was too small. This was back when Trent either sent me the wrong thing
or
>> nothing at all.
>> -Curt
>> From: Mitch Haley via Mercedes <mercedes@okiebenz.com>
>> To: Mercedes Discussion List <mercedes@okiebenz.com>
>> Cc: Mitch Haley <mi...@mitchellhaley.com>
>> Sent: Tuesday, June 9, 2015 1:46 PM
>> Subject: Re: [MBZ] And now for something completely different (not OT) -
>> R/R W123 coolant hose
>>
>>
>>> How do I get a part number for it? Or do I simply order generic
(approx.
>>> 1" dia.) coolant hose and cut it to match?
>>
>> If it doesn't have any molded bends in it and Goodyear or Gates quality
is
>> good
>> enough for you (5-10 year life vs maybe 10-20 for factory)
>> you can just take it off, and have the guys at FLAPS cut an appropriate
>> piece
>> off a roll of bulk hose to match it. Hopefully if it isn't close enough
to
>> a
>> common inch denominated side to do that, they'll tell you instead of
>> selling you
>> a too-large hose.
>>
>> If you want it RIGHT, go here and look it up.
>> You have to give them a credit card to activate a free one year
>> subscription,
>> IIRC.
>> http://epc.startekinfo.com/epc/login.jsp
>>
>>
>>
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