coming from I suspect one of the belts. Anyone ever came across this? Recently had cam belt and water pump changed and a few other bits but the 147 is making this odd 'wooshing' sound when accelerating at start up. Stops after around 2-3 minutes or once engine has started to warm up.
Only happens in cold weather. Really prevalent in 1st & 2nd but becomes less noticeable in 3rd etc.