[OzChinaRider]

Hi All, I’ve recently got my hands on a vnight and the first few times I took it out it ran just fine. Im now having a problem where it starts up ok and idles fine but once I’ve been out for a few minutes it starts to run rough and stalls.

At first I thought it might be a fuel starvation issue due to poor ventilation. I took it out for a quick spin tonight with the gas cap open and I still had the same problem. What other causes should I be looking at? Once it starts running rough it also starts making popping sounds like back firing at higher revs and also start pinging.