It seems to be dripping down from somewhere above the oil pan, on the driver's side.Īny ideas, assistance, feedback, etc. All normal areas (coolant flange, J-plug, etc.) look fine and are not showing any neon-green coolant. However, looking at the top of the engine, I cannot see anything really lighting up. Pictures (Please make sure you are using the photobucket extension):Īny ideas where the leak is coming from based on the pictures above? It appears to be coming from ABOVE the oil pan, in that small gap/hole area near the top. Came back after 30 mins to find the following: I pulled off the belly pan and got the car on ramps, ran it up to operating temperature, and then shut the car down. I ended up purchasing some dye and tossing it in the coolant tank to trace my leak better. I am still battling this coolant leak unfortunately, trying to identify where exactly it is coming from. Just wanted to provide a quick-update on this issue. If anyone needs any additional information to help in the troubleshooting process, please let me know! But, hey I could be completely wrong and it is something else that is the root-cause of this coolant leak as well.Īny ideas on possible weak points on where my coolant leak is coming from would be greatly appreciated. That is the only thing I can come up with that would make sense, but the question still is where is it coming from. When the car is on and the coolant system is under load, the o-ring is working as expected, and it starts leaking when things are cooling down and the car is off. Since it seems to only leak when things are 'cooling down', I'm not sure if that means it's an o-ring or plastic piece that is possibly shrinking as things cool down. Also, a lot of those components have been replaced in the last year and should not be leaking (specifically: Thermostat, J-Plug, CTS, Radiator). There is no dried coolant 'vomit' on the back of the engine, where a usual coolant flange leaks, so again I'm not sure how accurate that the flange is leaking to be honest. He checked the usual spots (thermostat, oil cooler, water pump, Jplug, etc.) and the ONLY thing he mentioned was he saw some pink crustiness on the bottom of the coolant flange. Unfortunately, he said he was unable to trace the leak. He put 20 or so PSI on the coolant system, and let it go for 10-15 mins to see if he could spot where the leak was coming from. I took the car to the independent mechanic here in town and he also is having trouble tracing where the leak is coming from. It started about a month ago after I'd come home and leave (few hours later) I'd find a small coolant puddle on my garage floor: I've been having a coolant leak over the past month and have been trying to identify where it is coming from on my 2004 B6 A4 1.8T.
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