08-31-2013, 07:43 AM
Started with older bikes and continue up to current CB/GW/T100 etc. I use a stethoscope to listen to the valves. Kinda fun. Run across the engine and you can detect all the intake and exhaust valves. My assumption is if they all sound the same; mostly, then they are OK. Chances of all valves being out of spec is slim to none. Started doing this in late 50's and haven't puked a valve nor had a problem yet.
You can listen for cam chain slop this way also. Listen to your bike when new and then again at low mileage to get a feel. If you are a geek (me) you can record the sounds and compare with later higher mileage tests. Scope is about ten bucks. Experience is fun.
You can listen for cam chain slop this way also. Listen to your bike when new and then again at low mileage to get a feel. If you are a geek (me) you can record the sounds and compare with later higher mileage tests. Scope is about ten bucks. Experience is fun.