W124 coolant leak

[Williamwoo]

<div class="bbWrapper">Hi all,<br /> <br /> Recently my E320 has developed a water leak. It seems to emanate from somewhere between the water pump and the engine block (but it's impossible to see exactly where), so I assume this means the water pump is shot. I'm not afraid to get my hands dirty, but how difficult a job is it to replace?</div>

 

[Ed65]

<div class="bbWrapper">I've just had a similar issue, turned out to be the fuel filter housing - quite common apparently. <br /> £500 at Mercedes dealer including 'investigation'<br /> (but had to be done the same day as it it was dumping all it's coolant every mile <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f641.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":(" title="Frown :(" data-smilie="3"data-shortname=":(" />)</div>

 

[moonrace]

<div class="bbWrapper">Do not go a Mercedes workshop charges are way too high</div>

 

[zipdip]

<div class="bbWrapper">Well if you are handy with a spanner then it is a job you can do in a afternoon,there is a great video on you tube which is still frames with details of what to do.</div>

 

[optimusprime]

<div class="bbWrapper">Ed65 If you have a fuel leak how can that have anything to do with coolant leak???</div>

 

[Williamwoo]

<div class="bbWrapper"><blockquote data-attributes="member: 148693" data-quote="Ed65" data-source="post: 2797443" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=2797443" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-2797443">Ed65 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> I've just had a similar issue, turned out to be the fuel filter housing - quite common apparently.<br /> £500 at Mercedes dealer including 'investigation'<br /> (but had to be done the same day as it it was dumping all it's coolant every mile <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f641.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":(" title="Frown :(" data-smilie="3"data-shortname=":(" />) </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote><br /> Thanks, but your engine is very different from mine - 4 cyl diesel v 6 cyl petrol (and presumably much newer!). Out of interest though, how does a fuel filter housing fault cause loss of coolant?</div>

 

[Ed65]

<div class="bbWrapper"><blockquote data-attributes="member: 35979" data-quote="Williamwoo" data-source="post: 2797754" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=2797754" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-2797754">Williamwoo said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Thanks, but your engine is very different from mine - 4 cyl diesel v 6 cyl petrol (and presumably much newer!). Out of interest though, how does a fuel filter housing fault cause loss of coolant? </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote><br /> My apologies!<br /> I think the fuel filter housing (on my model) must either be cooled by water or more likely, attached/adjacent to a part carrying water (see link)<br /> I hope you get yours sorted <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile :)" data-smilie="1"data-shortname=":)" /><br /> <br /> <a href="https://forums.mbclub.co.uk/threads/fuel-filter-housing-coolant-leak.232683/" class="link link--internal">Fuel Filter housing - coolant leak</a></div>

 

[Ed65]

<div class="bbWrapper"><blockquote data-attributes="member: 90353" data-quote="optimusprime" data-source="post: 2797753" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=2797753" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-2797753">optimusprime said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Ed65 If you have a fuel leak how can that have anything to do with coolant leak??? </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Hi please see my response to 'Williamwoo' <br /> Regrettably, as a new member, my enthusiasm to help exceeded my ability to read the model details correctly! <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f635.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt="o_O" title="Er... what? o_O" data-smilie="12"data-shortname="o_O" /></div>