bought my a6 2.5 tdi 02 plate last month. went to see it n no problems except very little black smoke. got him dwn a lot and bought it. put £40 diesel in n set of back hme. 40 mls into jorney, doin bout 120-130 (12am) n it just cuts out! not starting. did usual checks on hard shoulder n discovered no fuel getting to engine. neway towed it to my house n next day took it to local audi specialist.he checked fuel pump in tank n he sed sm1 had been filling tank using barrels. i.e. dodgy diesel, thus loads of crap in tank which had blocked the pump n it needs replacin n tank needs takin of n cleanin frm inside. replaced that n nw engine starts n idles. however does nt rev n gives out black smoke.nw he says could b engine fuel pump bt hes gna investigate further n then let me knw b4 he does nethin.
what do u guys think?