If your bike is idling like it’s got a cold and the throttle feels a bit lumpy, syncing your carbs (or throttle bodies) is one of those simple jobs that can make it run like it should. In this video I walk through how I synchronize the carburetors on my Kawasaki W650/W800 using a vacuum manometer. Same basic idea applies whether you’re on a twin, triple, or four-cylinder—what you’re doing is making sure each cylinder is pulling the same vacuum so the engine isn’t fighting itself. I show the setup I use in the real world: a fan in front of the bike so it doesn’t cook itself while you’re sitting there adjusting, a manometer to actually see what’s going on, and a cheap pilot screw adjusting tool that makes fine tweaks way less frustrating. This is unsponsored, and it’s very much a hands-on, “do it in your garage” kind of how-to. The takeaway is straightforward: take your time, make small adjustments, and you’ll usually end up with a smoother idle, cleaner pickup off the bottom, and an engine that just feels happier.