Hi all, hoping to you guys can help me out a bit. I've got a 2007 a4 2.0 tdi (170 BRD engine) with around 170000 miles on the clock which seems to have somewhat of an intermittent misfire. I doesn t always do it, and when it's right up to running temperature it's fine. There's no engine management lights and no limp mode, it just 'coughs' every few seconds when idling. No codes come up with my scanner, I'm hoping to het it on vcds at the weekend but would like some pointers on where I should be looking? Any pointers would be greatly appreciated thanks.