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Hi, new to the foum, just after some advice, after reading this great write up, I thought you might be able to help. I have been trying to diagnose bad cold starts and a rough idle at operating temperature. After replacing the DMF and EGR valve as well as having the fuel pump timing...

Hi there sorry to bump this thread but this is the closest thread I could find to help try to answer a query. I have been having ongoing rough idle problems when at optimum temperature also difficult called starts. The cam belt has been replaced and the timing has been adjusted via a VCDS also...