Lumpy idle from cold start clears after 30 seconds or so?
I have had my A4 B6 TDI 130 quattro sport avant for a couple of months now and been really happy with it. It pulls well, feels rock solid and looks great Its a nice change from my previous vauxhalls and fords :blush:. Anyways, I have a slight problem when the car when I first start it. The intial turn of the key fires it up straight away but after a couple of seconds feels like a slight misfire on one or two pots coupled with a grey sooty look from the exhaust, after half a minute it clears up. Its done 135 k. Had a full service history and just changed the cambelt, filters and oil. When I drive off there isnt any misfire or hesitation. Could it be a fuel pump issue? I have enquired into replacing the injectors and have been met with a scary price tag! The car hasnt been mapped and trying to flush it through with a heavy redex mix. Please help!