Lustthenlove Posted August 24, 2017 Share Posted August 24, 2017 Hi all, I'm in need of some help with my A4 tdi, ill try to explain the symptoms as best I can so here goes the following happens both hot and cold, 1st gear moving off from a stand still I very rarely get any turbo, when it does on the few occasions it's very strong and snappy, throughout the rest of the gears, the turbo pulls very hard after 2000rpm, it seems to be very much faster than the previous one I owned which was exactly the same (possibly this one is remapped) when the turbo kicks in the black smoke disappears many accelaration prior to 2000rpm give a sluggish performance and I big amount of bloke smoke. i have the engine management light on and when I plugged it in it came up with •mass air flow meter • glow plug circuit fault i have replaced the mass meter and the problem remains it does idle slightly lumpy which I have read tons about. im going to have a professional carbon clean done this weekend to see if this cleans up any sensors that aren't coordinating with each other, i don't want to throw a loads of money at this replacing parts if I can help it any help would be great could this be a dodgy egr, bad injector etc Quote Link to comment Share on other sites More sharing options...
Rob82DZL Posted August 24, 2017 Share Posted August 24, 2017 A good place to start for your smoke issue would be to whip off your egr as it may be coked up. For the engine management light/glow plug circuit warning it mite sound daft but check your rear brake lights. Quote Link to comment Share on other sites More sharing options...
Rob82DZL Posted August 24, 2017 Share Posted August 24, 2017 What year is your A4? Engine code? Quote Link to comment Share on other sites More sharing options...
Lustthenlove Posted August 24, 2017 Author Share Posted August 24, 2017 Hi rob it's a 2006 2.0tdi sline (140) not sure on the engine code. rear brake lights seem to work ok including the high level one, Quote Link to comment Share on other sites More sharing options...
Dan3222 Posted August 25, 2017 Share Posted August 25, 2017 Have a good luck at the intercooler, it could be split. When was the air filter last changed? Maybe also try a good injector cleaner. If all this is preturbo boost I would be tempted to ensure there is no air restriction or leak on the induction side of the engine. Still think the intercooler though. Quote Link to comment Share on other sites More sharing options...
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