If it is fitted with the hydro engine mounts and the fluid has leaked this could cause erratic idle had mine done on my a6 felt the difference after
a scan will pick it up
To be 100% sure you can get a sniff test (pressure test) never had it done myself but i believe it changes colour if it detects carbon monoxide
in your cooling system not to expensive
If no visible sign of leaks then could be head gasket try some kseal in header tank used it a couple of times with good results
if the loss of water stops then you know its head gasket
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.