07 brute 750,syncro throttle body, adjust valves,new plugs, when i unplug the vacumn line front or rear cyl. the engine will run fine , any suggestions?
the engine will run awesome then with no warning will run like it has a intake restriction. checked vacumn slides for cracks or pin hole(good) no intake restriction, removed air filter to watch carb slides, they will not slide into carb body. it acts like the timing will not advance. i...