VT500E whining noise
Some time ago I bought this 1988 VT500 E with supposedly 58 k on the counter. It's a well handling bike, although not the prettiest design.
Recently, it started making a whining noise when warm and only at idling engine speed. The sound will disappear as soon as the revs goes up and return at idling speed. If the engine has been turned off for a few minutes, the sound is gone, but will return after a few minutes driving. At first, the sound seem to come from the right side of the engine (clutch-bearing?), but I do now suspect the water pump may cause the noise. Does anyone recognise this problem?Thanks.