O-320 Fuel consumption at idle

Hi guys,

Just wondering what the average fuel
Consumption is for an O-320 at 1000rpm,
leaned and/or rich.

Cheers

Not exactly the answer you wanted but, my IO360/180HP on my RV7 was giving me a low fuel flow warning yesterday taxing to the runway. It was running fine at 1.5 GPH.

BoydBirchler said:

Not exactly the answer you wanted but, my IO360/180HP on my RV7 was giving me a low fuel flow warning yesterday taxing to the runway. It was running fine at 1.5 GPH.

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Thanks, that gives me an idea of how much it consumes at idle.

My reason for asking is I burned 12.4 Gallons during a 1.4 hour flight
but I also idled for .6 on the ground, a total of 2 hours with the engine running.

I’m not getting as good fuel economy in -25 degrees Celsius weather.
I have a CAT gauge so I might use my carb heat to bring up the temp in my
Carb to around -3 degrees Celsius.

Unfortunately, very few gauges are accurate at that low of a reading.

Not an io320, but the cessna POH for a io360 says to allow 1.4 gallons for taxi and runup. I can’t imagine a 320 burning more than a gallon or so during pre and take off activities unless you have some kind of really long taxi or hold time