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fuel consumption

by John Hamm in 912 / 914 Technical Questions 13 years ago

my 912s is burning around 4 gallons of fuel per hr. It is on a powered pc what is most likely the problem.

Re: fuel consumption

by bill martin » 13 years ago

bill martin

10 757 0

John,

I would guess that your cruise RPM is pretty low on a PPC. Have your carbs been synched lately? The lower the RPMs, the more critical it is to have well synched carbs. If your cruise RPM is below 5000, this could be part or all of the problem. Has the consumption problem always been there or is it a recent problem? how are your EGT temps? If they are excessively low you could be running too rich.

Bill.

Thank you said by: Allan Bergan

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Re: fuel consumption

by Roger Lee » 13 years ago

Roger Lee

128 5.28k 4.98k

Hi John,

If you are running 3500 rpm then 4 gph is a lot, but if you are running 4700 rpm in cruise then that is normal.
What are you running for rpm at that GPH rate?
What rpm do you use for cruise?

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Thank you said by: John Hamm

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Re: fuel consumption

by John Hamm » 13 years ago

John Hamm

1 1 0

I run 4300 to 4500 level flight.

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