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  #1  
Old 21st March 2017, 01:20 PM
Andys25 Andys25 is offline
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Default Slow Coolant Leak

So, I have slow coolant leak. maybe have to top up every 2 weeks or so. the car still has all the under-trays on so locating the leak is pretty impossible at the moment.

question, are there any known typical locations for leaks that i can try first. Though finding a what is most likely a pin hole in a hay stack is likely to be difficult.

any suggestions welcome.

cheer all
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Old 21st March 2017, 02:08 PM
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Architex_mA8tey Architex_mA8tey is offline
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Originally Posted by Andys25 View Post
So, I have slow coolant leak. maybe have to top up every 2 weeks or so. the car still has all the under-trays on so locating the leak is pretty impossible at the moment.

question, are there any known typical locations for leaks that i can try first. Though finding a what is most likely a pin hole in a hay stack is likely to be difficult.

any suggestions welcome.

cheer all
bottom rad pipes on the N/Side is my best guess!
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Old 21st March 2017, 07:42 PM
Joe2.0E Joe2.0E is offline
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If its a TDI, the EGR Cooler is also a likely suspect and can be hard to find as it is in the V of the engine and a small leak will evaporate due to the heat in the area.
Maybe get a mechanic do do a pressure test to help locate it.
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Old 21st March 2017, 07:48 PM
snapdragon snapdragon is offline
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Which engine?
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Old 21st March 2017, 07:56 PM
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Next job on my list is a slow coolant leak as well.
In my case it's an alternator which has a very slow leak.
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Old 11th April 2017, 01:57 PM
Andys25 Andys25 is offline
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Which engine?
3.0 tdi
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  #7  
Old 11th April 2017, 02:18 PM
snapdragon snapdragon is offline
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If you take the undertrays off there is a rubber pipe of around 1" dia that connects to a rigid pipe with a metal spring clip. Mine leaked there. A garage put a jubilee clip on instead of the spring clip which fixed it for a few years but is leaking again after I disconnected it to drain the coolant. That's the only place I have had trouble with. I will fix it again soon, but a PITA to get the trays off on my driveway - it'd not quite summery enough yet.
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