Re: is there a reason why noone will answer my post????
I usually like to just read all the comments but I'll give it a shot as I don't know model/year. I've worked on Mercs since '76 and don't remember if Merc even made an 18 hp. I am getting old, so it may be just my memory. When you say an "old Mercury" I'll assume it is pre-60's and your question is pretty generic anyway, so here goes...... When you lift your outboard, some gas will probably spill out through either a worn needle valve or through the atmospheric vent. As with anything old, and due to multiple varied situations, we all start differently, some will need priming...some won't. Some you need to raise the warm up lever, some you don't. Some will leak more gas than others, etc. etc. There are hundred other adjustments and checks that could be made to remedy your situation. All of which will cost you money and only change the start up conditions. Find the procedures that you will need to follow in varying situations and live with it, as I see it you don't really have a problem.