Depending on the time taken to separate, it might be sufficient to shake the can every time you use it, but if its more rapid, it might actually need shaking as its being used.
We had problems last year with the outboard
. The gas in the can had been stood for months. I connected the line, started the engine
and ran it for maybe 10 mins before it splutterred to a halt. After a lot of pulling, it would fire and rev hard and by the time it got into gear
it would die again.
It was a typical gas type problem. I kept pumping the primer bulb to keep pressure in the line but it didnt improve.
Next day I stripped the carb and found dirt in it but not enough to kill the engine. The vacuum pump membrane wasnt in a very good condition but I was over riding any deficiency that may have had by pumping the bulb, so that couldnt be the cause.
When I checked the gas can, i was sure I could see what looked like water rolling round in the bottom but I poured some out into a jar and it didnt look like water then.
All very suspicious. Maybe it was the dreaded ethanol?
I knew theres a good reason why I like diesel