Today another noise... out comes the stethascope.. valves good, down around the spark plugs,nothing different ,tried the water pump... what a racket.. Shut the enging off, put a light on it and torqued the pump drive wheel. I could tilt it 1/8-1/4 inch. not good, put a light on it and I'm missing a bolt and the other two were loose

Yes a long screwdriver works but for $15.00 I like the stethascope. Cool tool.
The other I use an awfull lot is the benchgrinder with a wire wheel, Cleans things up real quick.