I wondered if any of you guys may be able to help. I have an 03 plate VTS, and recently it has started making an unusual noise. The aux air pump emits a pretty loud whine on startup, which soon goes away, but then when idling there is a kind of glugging noise coming from the hose which runs along the top of the rad? It does it whether the pump is connected or not. Any ideas whether to sack off the whole system, and what plug is required to fill the hole in the manifold, or of any other solutions to the problem?
Thanks in advance,
Will
Thanks in advance,
Will

