Ineedmoreaudi

Hi all, so the engine has been stripped down. A few interesting discoveries. firstly I found the vacuum pump did not have the crush gasket installed, found scraps of silicone around it. I did notice an oil leak but could not see where from when the engine was assembled. secondly the the 2 rubber O rings installed on the black spring that sits under the oil filter in the oil filter housing were completely worn. and finally the the conrod bearings have uneven wear. I don’t actually know what they should look like. I would have thought it’s normal wear but because it’s uneven it’s got me wondering. maybe one or all of these are causing oil pressure issues and the error message to pop up at idle? adding some pictures of the bearing so hopefully somebody can advise on this further. thanks

Ok thanks for the advice, will update soon.

Any idea on how I would perform a reverse flush? Thanks

Thank you for a quick response. I will try that when all is open…

Hi, I have 2010 Audi A5 2.0 TFSI CDNC engine. Automatic. 62k miles. The old style tensioner failed on it. Replaced the timing chains. Compression test was fine so did not need to take off head for valve job. Castrol edge 5w30 LL oil used. New plugs, filters, new battery. car drives spot on, plenty of boost, no error codes on vcds. Sounds a tad loud at the top but they all sound like that. when the car is warm and I come to a stop, at idle, I get the warning message. “Do not exceed 4000 rpm” - still no fault codes, no epc light, no engine management light. I am getting 1.5 bar oil pressure at idle and the sensors have been replaced and not throwing any errors. I swapped the oil pressure solenoid (bottom of engine next to crank pulley) over with another working one that I had on the shelf but still message comes up. also swapped over the cam bridge. Did notice screen was broken, recovered most of it, yet a tiny piece I think may have gone through the galley but I am not sure. The sump had some ali shavings and gunk but not much, there were some small broken parts of the chain guide, otherwise very clean. Oil was very dirty. not much on forums on this topic and a lot of random answers too. After a lot of reading and swapping parts over. -I am lead to believe this broken piece from the cam bridge is stuck somewhere -pieces of the guide maybe stuck somewhere -it could be oil pump, -balance shaft, -or non return valve inside the head. before I strip everything down again was hoping somebody could shed some light on this issue? Thanks