Coolant leak near drivers side wheel only when engine off (bu reservoir full)
11-28-2021, 02:23 PM
#1
Senior Member
Thread Starter
Coolant leak near drivers side wheel only when engine off (bu reservoir full)
14 67k miles had a issue with my IC pump not working (under engine cover). This happened after mb dealer had engine out for a service and didn’t properly bleed it.
Had the coolant flushed and pressure tested and IC was working well. No leaks.
Two weeks later this Fri after 1k miles I noticed three droplets of liquid I used a napkin and it turned blue. I turn car on and let it idle for 25-30 min no more drops. I did a long drive and came back no drops. Yesterday I noticed no new leak and turned it on let it idle 30 min no leaks. I came back from small drive and looked under no leaks. This morning I see new leak droplets.
Checked main reservoir is full to the top. Checked IC reservoir attached is pics.
When turbo coolant lines leak which reservoir is being used?
is this normal symptom of these lines to leak overnight when not in use ?
Had the coolant flushed and pressure tested and IC was working well. No leaks.
Two weeks later this Fri after 1k miles I noticed three droplets of liquid I used a napkin and it turned blue. I turn car on and let it idle for 25-30 min no more drops. I did a long drive and came back no drops. Yesterday I noticed no new leak and turned it on let it idle 30 min no leaks. I came back from small drive and looked under no leaks. This morning I see new leak droplets.
Checked main reservoir is full to the top. Checked IC reservoir attached is pics.
When turbo coolant lines leak which reservoir is being used?
is this normal symptom of these lines to leak overnight when not in use ?
11-28-2021, 04:33 PM
#2
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Join Date: Jan 2016
Location: Was, Cali, 95XXX, now Bavaria 91XXX
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993 cab, 2014 E63 AMG 4matic T
I also have a 2014, with ~50k miles. Had to change the main coolant reservoir due to hairline crack on the back side.
I purchased a pressure tester and ran both coolant circuits which made it possible for me to find the problem. The leak was so small that it had to have high pressure to show.
A new reservoir solved it.
You may have a similar problem.
Good luck with the repair.
I purchased a pressure tester and ran both coolant circuits which made it possible for me to find the problem. The leak was so small that it had to have high pressure to show.
A new reservoir solved it.
You may have a similar problem.
Good luck with the repair.
