Loss of power lumpy and smoking A6 2.5 TDI
Can anyone offer me advice please. 2000 130,000 miles. Car running like a dream until yesterday I started her up and she was runny lumpy, then noticed smoke (White/hint of blue) Lost a lot of power. Car shuddering a bit on tickover. Felt all the world like a vacuum hose was leaking (experienced on previous cars) Checked what hoses i could and replaced a couple that looked a bit dodgy. Made no difference. I plugged in a VAgCom thingy I had bought on fleabay about a year ago. No faults. Looked through the forum and just managed to confuse myself with all the advice.
Doesnt seem to be excessive pressure when I open the oil filler after a run.
Smokes like hell when i accelerate up hill or even maintaining speed. No smoke on deceleration.
Could it be the EGR? Is it worth cleaning it or getting a new one?
How would I diagnose that?
Could it be the Turbo? How would I diagnose that?
Could it be anything else?
Anyone in East Lothian or Edinburgh sort of area with a proper VagCom?
Any advice appreciated. Thanks for looking.