I was happily squirting Zelda along some twisting country roads when suddenly it seemed that she was running on 5 cylinders, all rough like, but still driveable. Got home and the idle was lumpy and uneven. Checked the air hoses all ok. as far as I could see. Plugged in a code reader, but all I got was a no link reading. I was feeling a bit rough myself, getting over another bout of Man 'flu so I did no more. The next day I started her up, fine, running on all 6 smooth as silk. Got about 70 yards down the road and the fault returned. Started her up in the garage today, all ok for about 10 secs then back to the lumpy idle, but this time with a few brief periods of all 6 firing when revving before returning to the lumpy tick over. Your thoughts and ideas to rectify please. Thanks in anticipation, Bonzo. ps she was sulking because I had the top up because of the Man 'flu.