Re: Fuel line quick connect.
The float valve in the carb, if working correctly and adjusted to the designed float level, should stop this. If you have a source of pressure on your fuel system, over about 6 psig at sea level, it could overpower an otherwise good float and cause the problem.
We used to run our engines dry years ago, every time we came out of the lake/bay/whatever as we were concerned with carbs varnishing up. Seems the newer fuels, how bad they seem to be, have a good point in that they don't seem (to me) to varnish as easily when fuel is stored for a long time. So nowadays I never run the engine dry.
The roller bearings in your engine run on a very thin film of oil, not like the crankcase of a 4 cycle auto engine. So even though you shut off the fuel mix, there will be a slight amount of oil remaining.
Some people object to doing this as one carb will run dry before the other and that cylinder will run dry till the engine stops.
My opinion, supported by years of doing this as did most others I knew, is that the engine doesn't continue to run long enough to hurt anything.......and none of us ever had to overhaul our engines (for that)......thru 125 hp.
Mark
