Here is my problem cart runs great with the pulse line off the crankcase pulse nipple if I pulse it manually. Pulse line dry as a bone. If I hook up the fuel pump pulse line back on the crank case nipple cart quits and the pulse line is full of gas spitting out! Never seen anything like this! Air cleaner is off and no visible gas spilling all over. Carb is new as well as fuel pump. Really need help!!!