1990 Baja with twin 454 Magnums 650 hours, has run well until now. Fresh water cooling. I have always done my own winterization including two plugs in each exhaust manifold, two in each block and both hoses removed off the inlet water pump to drain the pump and exchanger. This past year I did reinstall all plugs and hoses after draining (used to leave them out until spring in the past). I also failed to lower the outdrives (used to always store them in the down position or remove the entire outdrive). I am in upstate NY where it gets very cold during the winter. Everything started up fine running off ears and first trip out on the lake seemed to have gone fine. Several weeks later, motors ran rough and didnt want to idle unless the throttle was bumped up a bit. Once out to the open water realized things not going well. One motor would not rev past 3000 and the other seemed slow to rev. Looked into motor compartment and saw extensive oil-water emulsion coming out of the top of one of the motors. Shut it down and idled back on the other motor. Checked and found both motors have lots of water in the crankcases. I believe all water was effectively removed for winterization. I do not re-fill with antifreeze after draining. Will be pulling plugs and cranking to try and detremine if water is getting into combustion chamber. Ideas? Thanks.
