greenish liquid leaking from my vehicle

Asked by Jun 08, 2013 at 05:09 AM about the 2005 Audi A4 Avant

Question type: Maintenance & Repair

im driving an audi A4 2004 model .recently the water level has been going down and on topping up i see some dripping from underneath the coolant tank,also after driving the car i notice "greenish water" flowing from the car,as i open the bonnet i notice the water in the coolant tank practcally boiling or forming bubbles.what could the problem be in this case?

1 Answer

246,305

The "green water" is your coolant. You are just adding water, diluting your coolant. Apparently you have a leak somewhere and need to have it fixed. Could be a hose, expansion tank, water pump, engine block etc. The boiling and foaming is a symptom of the leak and a low coolant level. Have a mechanic inspect it ASAP, you don't want to overheat your engine causing more damage and being stranded on the side of the road.

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