Ignition Timing vs Speed

Okay so I smelled my oil and yes it had a smell of gas to it. So I went ahead and put all new oil in the bike . Is it possible for a kz750 twin to run on one cylinder??? I had it running yesterday but my right side plug looks just as it did out of the box. where as left side has a lot of black to it. I thought I read that my bike wont start unless both plugs are firing , but if I am on one cylinder then that would solve my power issue I am having.

Okay so results in and problems solved . After changing oil I went through the carbs again just to be safe and good thing I did. The float in my right carburetor was stuck closed . It was a float that I replaced a while back . These newer floats have a tiny stopper on them which was keeping it from opening enough. I bent the stopper back alittle bit and put it all back together. Bike runs stronger than ever now . Who knew . :silly: