Ian Chalmers Posted July 30, 2023 Share Posted July 30, 2023 Hi guys, I’ve recently bought an A4 b7 2.0 tdi Quattro special edition 2007, it went into limp mode but once left for a while it starts and drives fine but I noticed oil in the expansion tank and it’s losing about half an inch of water a week , the car drives perfect I’ve had the oil cooler replaced the Egr cooler replaced the cooling system cleaned out but it’s still happening , no coloured smoke from the exhaust, has anyone had a similar issues and how to rectify it cheers Quote Link to comment Share on other sites More sharing options...
Stevey Y Posted July 30, 2023 Share Posted July 30, 2023 17 minutes ago, Ian Chalmers said: Hi guys, I’ve recently bought an A4 b7 2.0 tdi Quattro special edition 2007, it went into limp mode but once left for a while it starts and drives fine but I noticed oil in the expansion tank and it’s losing about half an inch of water a week , the car drives perfect I’ve had the oil cooler replaced the Egr cooler replaced the cooling system cleaned out but it’s still happening , no coloured smoke from the exhaust, has anyone had a similar issues and how to rectify it cheers Hi the only way to find out is have the car scanned for codes, absent any codes have the coolant system pressure tested, unfortunately it sound like a head gasket has a small leak between a water and oil gallery. Steve. Quote Link to comment Share on other sites More sharing options...
Anton8 Posted July 31, 2023 Share Posted July 31, 2023 I agree with Steve. It does sound like a head gasket problem. Tony Quote Link to comment Share on other sites More sharing options...
Itspointless Posted July 31, 2023 Share Posted July 31, 2023 Any water in the oil? Quote Link to comment Share on other sites More sharing options...
Ian Chalmers Posted July 31, 2023 Author Share Posted July 31, 2023 The garage says no but there is some milk on the rocker cover and the oil level seems too high Quote Link to comment Share on other sites More sharing options...
Itspointless Posted July 31, 2023 Share Posted July 31, 2023 Unfortunately if you have had the oil cooler changed already then the only suspect left is the head gasket as mentioned above. Quote Link to comment Share on other sites More sharing options...
Ian Chalmers Posted August 11, 2023 Author Share Posted August 11, 2023 Thanks guys , just off chance could the oil pump have anything to do with this , I believe that there is an issue with this pump and that there is an upgrade 🤷♂️ Quote Link to comment Share on other sites More sharing options...
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