I've recently noticed a strange problem with my 53 reg A3 2.0 TDI BKD 140. When the engine is cold, it has a reluctance to accelerate under load from around 30 mph to 70 mph. It does eventually start to, but after a lot of juddering, as if its not getting enough fuel. The problem disappears once the engine is warmed up but since my journey to work is only around 5 miles it hardly ever reaches 90 by the time I get there.
I've done a quick search which has pointed towards the tandem fuel pump or injector loom. I also changed the fuel filter last week as it was jet black but the fuel didn't look too full of oil.
Has anyone ever had similar issues?