Thread: Fuel pump pulse type

Must be some small engine gurus here. Got the latest toy home and been mucking around with it. Its a gokart with a modified honda gx200. At high revs it seems like its running out of fuel. Im a car guy so the basics are similar with a few different little things. Im wondering about this pulse fuel pump. Where would the best place for it be to run at high revs? Some people run them off the inlet manifold which I would of thought would be vacuume at high rpm, and I see some people run it of the crank case?