I have a Chrysler 8HP mid '70s - that I am using mainly for trolling, so this guy runs most of the time idle speed, and each time I park the boat in the garage after I come back from fishing that little beast will leak an oily grey/brown stuff and it smells engine combustion, from the small ports in the lower unit and this for days after it sits there. It runs not too bad - keep idle - take his gas good - start not too bad - any idea why it is doing this ? I ran with 50:1 ratio and with a bit hotter plugs.<br /><br />Thanks<br /><br />Smoky