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#1
21st March 2017, 12:20 PM
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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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#2
21st March 2017, 01:08 PM
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Quote:
__________________
Confidence is the feeling you have before you know better . . . .  Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble  Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#3
21st March 2017, 06:42 PM
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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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#4
21st March 2017, 06:48 PM
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Which engine?
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#5
21st March 2017, 06:56 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.
__________________
 2006 D3 S8 5.2 V10 Ceramic Brakes, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI , 4 Zone AC, Home Link, All Electric Blinds, Fingerprint, Ski Hatch, Black Extended Leather, Heated Sport Seats, Alacantra, Carbon Trim inc Aluminium Pack 2. 2015 A3 S line 1.4 TFSI - for the missus to keep her away from my car. Standard S-line equipment, no extras. 2006 D3 A8 3.7 V8 - SOLD but not forgotten
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#7
11th April 2017, 01:18 PM
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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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| coolant, leak |
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