Quote:
Originally Posted by DaveNP
If it's there with the engine ticking over while parked there's always the old skool trick of taking a length of wood and positioning one end on a bearing or suspect part then putting your ear to the other end to listen, posh mechanics use a proper stethoscope device  |
I have used a home made stethoscope in the past to locate such a noise.
A couple of feet of plastic tubing with a small plastic funnel jammed in one end. Place the funnel to an ear and the other end of the tube against whatever you wish to check. It’s amazing how much sound can be heard. Tappet noise when placed against the camshaft cover. Bearing noise when placed against a water pump or alternator. etc.