My 08 RSV feels and sounds like its only hitten on two cylinders. It won't even run in 5th gear without bogging down and I have to shift back into 4th. And then it will barely hit 50 MPH. I changed out the plugs, but I think it just made it worse. I may have some bad gas. I'm going to get some Sea Foam and try running it with that in it for a while. Any easy way to figure out which cylinders are not firing? Any ideas why it would quit firing on two cylinders?
Thanks,
Glenn