does it when sat at sixty, but saying that we came back from Horncastle an I was on an off the gas due to back roads an it still managed to do it twice, its so irregular you cant pin point it to a certain pattern, when we had laptop plugged in we went from Donny to goole to blyth, idid half a tank a derv that night, an it played up after 2mls at sixty,then it went ok for 10mls, then it went ok for 6mls, I found if I dipped clutch an revved it, it coughed abit then kicked in again , let clutch out an off ya went , but now it doesent always do that now, tonight I came down A1 from A639 at ponty to A635 Barnsley rd turn off cant be more than 8 mls did it twice pulled up at round about revved it sem,t ok pulled off, nowt ther then in a split second ya off like a rocket, I will try fuel cap tmoz, an wat is egr valve please, thanks for the replies neil