vacuum gauge... anyone ever?

[WIkid500]

Anyone ever use a vacuum gauge to diagnose a 3 wheeler? I have a nice port in my intake, where I plugged the hose in.. I don't know if I like what I see on the gauge... All this is on my ytm200.


Any input on this subject?

[ccdhowell]

I was wondering about this myself. I ran across an old vacuum gauge that used to be in my hot rod. My first thought was that I could mount it to the handlebars for a little bling. My second thought was that I have a 2-stroke and it probably wouldn't work.

[WIkid500]

I was just curious cause it bounces a lot at idle which is expected from a single cylinder. then as I rev it up it goes into the cam timing advanced... then mid throttle it is in the black between good, and bad, then just above idle it reads timing retarded. The thing that makes me wonder about the whole b.s. is some times when I let off the throttle it coughs through the carb. I don't know if it's cam timing, or ignition, or just needs a carb cleaning. It runs good except for that little stumble...