Engine Stethascope

[XFactor]

How well and accurate do engine stethascopes pick up internal engine noises such as knocks?? Should you be able to clearly hear something like a bearing or cam noise with the probe placed somwhere on the block??

 

[WarpSpeed]

I'd say they work pretty well. For example, you can actually hear the each lifter riding on the cam from the valve cover, in the right spot. I got one from Harbor Freight for just a few dollars.

 

[turbojimmy]

I bought one at the local auto parts store for $20. It works great. I was able to narrow down my rod knock to the crankshaft with it. The knock sounded like it could be coming from anywhere. I was able to put it in different places and hear what was going on - could hear the rockers working, the water pump impeller spinning, electrons moving through the alternator (not really), but the knock really got loud when I put it on the timing cover right by the crank.

A $2 piece of 5/8" heater hose works well, too.

Jim

 

[spining 6]

pipe

I don't need no stinkin stethascope,just need 3 ft iron pipe yehaa!