I think its either an 83 or 84 110 VRO Evinrude. With muffs on it runs great out of water with full throttle. Once in water it starts and sounds great with the choke on, but once the choke is shut off it wont even idle and I cant get it in drive. I've heard that this could be some sort of exhaust issue, but I don't know how to fix it. Any help sure appreciated