Need some help please .my insignia 1.8 has a whistling noise on idle when hot rev it up it stops ,doesn't do it all the time ,changed belts still there ,I thought it may have been the diaphragm in the cam cover ,opened the oil filler it didn't stop .it's coming from the front of the engine on the rhs but I can't pin point exact location ,has anybody had this on theirs and what was the cause ,it maybe water pump but not sure
Any help greatly appreciated
Any help greatly appreciated
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