Front cylinder lean
Hello everyone - I just bought a 2002 vulcan 750 about 4 months ago and love it. I am new to this forum. I did notice the front cylinder is a little lean when inspecting the plugs as they are white in color. The rear looks fine. Color of the chrome tailpipe is a little yellow. My dad tells me that is from being too hot and lean. It runs pretty good, backfires on occaision when letting off throttle high rpm. Im told the front cylinder should run a bit leaner. I have worked on a lot of cars but bikes are a little new to me. Does anyone think the carbs need syncing or if I should be concerned to correct this? Visual inspection is ok. I see no vaccum leaks but have not smoke tested this. I did have one issue one day where the engine seemed starved and shut down, but I think it was vapor locked. I popped the gas tank lid and it started after about 5 min. Any suggestions appreciated. Thanks .