My Old Evinrude (mod.10020) runs great high and low rpms as long as I keep squeezing the primer bulb on the gas hose every 10 seconds or so. It gets gas starved and quits when I don't. Is this a fuel pump issue? Also, I don't know if it's related but I replaced the original gas hose that did not have an in-line primer bulb with one that did. Could I have caused this fuel problem? Thanks for any assistance!!