I fired up a few engines in fleet while the sun was shining today. I wanted to see how things would behave after a year of sitting with my most recent long term storage routine.
My spare mower is a iron cylinder liner Chinese GX clone. It has sat 2 years without running stored outside under a tarp. I oil the exterior with cloth covered in old motor oil ( including the underside ) and inside the engine was liberally coated with clean engine oil poured in from the carb side and pulled over until it coughed out the muffler. Fuel drained removed and the fuel system flushed with WD40.
Mower started first pull, smoked a little but ran fine.
Next I fired up my third spare generator ( I am very paranoid you know so I need a back up for the spare ) It was stored inside and wrapped in plastic. This time I used a commercial engine fog and the tag says I put 91 octane no ethanol gasoline with stabil in it. The battery had been connected since its last service in June 19 and it have been charged several times
Its started after 5 seconds of cranking, stumbled, stalled and went through a second cranking cycle before it settled down and picked up a 1300 watt load. I must have fogged the hell out of it because it took 15 minutes for the smoke to clear, it even attracted the neighbor 3 houses down to see what was going on.
Next I started LK Onan ( the second spare ). It was stored with a tea spoon of oil down the spark plug hole and the flywheel turned to ensure both valves were closed after a full service last spring and it had its carb and fuel system flushed with mixed commercially blended 2 cycle oil/fuel in a can but stored dry. It was stored completely covered by a plastic bag and taped up to prevent mice from getting in it ( mice seem to love Onan )
Its started after an especially long cranking cycle but that because I never primed the fuel pump and it produced the least amount of smoke
Next is the Honda. It had nothing done to it other than I park the flywheel to keep both valves closed and simply the carb drained. I expect it will start too, but the carbs always give me a bot of trouble unless I do something to prevent corrosion. There is some surface rust on the exhaust and dust on it from sitting uncovered. Log book says it had a service last in May 19
My primary lawn mower ( a 1970s lawnboy 2 stroke ) having had nothing done to it and still containing last summers gasoline needed 3 or 4 pulls to start and even though it was covered next to the spare it showed some rust and I think there was some moister in the ignition points because it was fussy until warmed up
Still to be looked at is the spare snowblower that has not had a service or any attention since spring 19 with old gas still in the tank. I don’t expect it to start at all. I do think I will find corrosion in the carb and maybe some rust on the exhaust valves.
This is not a scientific test, I just want to see if I gain anything from being more careful about things. I do know the excess storage oil burning off pissing off my neighbors. 2 cycle engines have a lot less issues after a winter of neglect it seems because the oil in the fuel seems to prevent a lot of rust and corrosion in the engines and fuel systems.
I think the spare snowblower is the best one to test next fall after its woodgas conversion and the following spring I will see how it fared without any care of maintenance done ( I am not going to snow blow on wood just run the engine up some hours and then do nothing too it for the winter ). My fuel was drawn from a drum I store gas in and have stored gas in for the past 3 years with draw downs and top ups as needed. My fuel smells and looks fine
This is really all I have to say. I am bored stuck in lock down on a rainy day looking for things to do.