greginsp wrote:
RoyB is on the right track. We have transitioned from winter gasoline to summer gasoline. Gasoline purchased during the late fall to early spring is allowed to have a higher percentage of "light ends" blended in as opposed to summer blends which are heavier and will not pressure up as much as temps rise.
Reid Vapor Pressure is the standard and a higher vapor pressure is and has been allowed for quite many years during the colder months.
Is it my imagination, or does my little Honda EU1000i seem to run a bit stronger on summer fuel than winter fuel? I have a charger, that when run on the battery on summer fuel, the genny runs just fine under heavy load when first charging, while the winter fuel makes the generator act like it's hunting, searching and running too lean, or not enough power to handle the charger. Elevation is the same, winter fuel just seems to cut 10% of the power the generator makes. My kil a watt meter shows it being down about .8 Ah before the motor struggles a bit on winter fuel, trying to hold rpms. I am then forced to adjust the charger voltage down a notch the first 5 minutes before it will take the 14.8V setting. Annoying, to say the least.