I have two 1998 225hp evinrude ocean pros which smoke excessively (imo) at start, clears up at acceleration and increases again at idle. Engines run well at idle and at power. VRO pumps or something else? Could ethanol have damaged the seals or gaskets on the VRO permitting air to leak in and decreasing thr fuel to oil mixture at idle? The engine which smokes most burns more oil than the other. Should I replace VROs or convert to pre-mix? Non-ethanol is now available here and I am now using that fuel. Can't afford to re-power just yet.