Hi - back in august I asked door advice about chugging and rotten egg smell. It went away. Have had the rotten eggs only a couple of times since (not bad). Tonight moving away from traffic lights, got a chugg. Tried revving it up a bit a few times from slow as I went on - eventually got a petrol smell for a few minutes and that went away. Revved up again a few more times and got a burning smell (sometimes get this when revving heavily - has done this very sporadically for 4 years - I don't normally use high revs)......any bright ideas please? Doesn't sound like anything major....
Thanks
Glenn