GS problem

[construct09]

6 days ago I purchased a 2012 GS500 with appx 9000ks on it, it had been serviced by the bike shop I bought it from, I have travelled about 700ks since I got it, mostly Highway ks, very little around town stuff and today I noticed it bogging down under acceleration at around 5000 revs, it was also blowing white smoke from the exhaust when accelerating and there was a tapping noise from the front of the engine when accelerating.
It idles fine and does not blow smoke when idling. I removed the tank today to check the air filter and that seemed fine although I did notice the right hand side of the airbox seemed wet but the left was completely dry.
Anyone have any ideas what the problem may be?

thankyou

[construct09]

I forgot to mention that I always let the bike warm up for appx 10-15 minutes before each ride then check the oil, it is not using any oil. Today it was a little harder to start than usual. Yesterday I did appx 150ks in light showers but it did not miss a beat, the air filter was dry when I checked it today.

[dominickbuff]

hmmmmmm...... humor me and check sparkplugs

[Watcher]

If the airbox is getting wet at all you can be guaranteed that your carbs are overflowing.  That is caused by improper float height or a worn/dirty needle/seat.

You can check this with a piece of clear tubing.  On the bottom of each carb bowl is a nipple near a brass screw.  Hook a piece of tubing on the nipple, hold it up in a U shape, set the petcock to PRI, and open that brass screw.  The fuel level in the tube should rise to the gasket surface and stop.  If it's higher you need to adjust your float height for that side.

Also, smell the oil for any kind of gas odor.  If the carb overflows significantly enough to enter the cylinder it can be running past the piston rings into the crank-case.