need some advice ive got a renault kangoo van 2001 done 66k but has a running problem first turn of the key it starts but runs bad smokes etc like the timings out but 2nd turn of the key it runs mint no problems and does london to the midlands runs all the time with no issues any ideas? im thinking diesel pump issue as it smokes and judders like its knocked the diesel timing out p.s i know its not a ford but still