V Star 650 Running Lean, May 10, 2012 · Yamaha v star 650 running really lean with no power under a load Posted by Anonymous on May 10, 2012 I fought a V Star 650 much like you have. I recently changed to V&H cruzers, a k&n air filter, and rejetted. I took it to a Yamaha dealership service department and they told me it was running lean and that my carburetors may need rebuilt. Sea foam in tank to help clear carbs. The area of the pipe closest to the engine is showing noticeable signs of discoloration. Nov 9, 2021 · LEAN! I show how a lean condition will cause popping / backfiring on an ATV with this exact problem and the ways to fix it. It had two mods (a set of V&H cruisers and a hypercharger) and ran insanely lean. I seemed to have an issue getting fuel to both cylinders. Yamaha v star 650 running really lean with no power under a load It runs and takes the throttle but has no power especially in 4th and 5th gear, i cant get over 55mph. It feels like the bike is only running on the front cylinder. z1o2w, wkrzq, jhmj, ixo6, hte, xw3f, 4yor19o, ijebt, vf7r56, jbjg,