I have an 87 Honda which has been sitting for a few years now, it starts, and idles, but would bog down and stall out if you attempted to rev it. I replaced the fuel pump, cleaned the tank, replaced the fuel filter, new spark plug and wire, & put a brand new carb on. Now it idles fine, and you can rev it so we went to test drive it, got around the yard, & it stalled out. Now it seems to be flooding itself after a few minutes. Any suggestions as to what this could be?