Does look like you have a faulty purge valve. See this for more info on how it works and why it should be closed when there is no voltage
http://youtu.be/dGfxpjGZsRI
http://youtu.be/dGfxpjGZsRI
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Locosaki said:Just to finish this off chaps
Problem was indeed with the purge valve in the engine bay, valve would open but would not close. I fitted another valve on this and covered a few miles now with no unwanted noises and no fault codes when scanned. Car going well hopefully I've not jinxed it.
Thanks for all the help again.