HI All, I have a 1990 Ranger Comanche 361V . When my boat is sitting I often smell gas odor coming from cowl vent near back of boat . It always the vent by the gas line. One is pointed forward and the other is pointed rearward. I changed all the gas lines from the two tanks to the engine, including the primer bulb. Is this normal to smell a little gas odor? I don't think I have a gas leak before the primer bulb because when I prime it the bulb will stay hard for a long while, sometimes till the next day. Some people are telling me its normal and some people are telling me I should not be smelling any gas odor at all. Can someone tell me what's going on?