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Thread: Fuel Burn and Mixture Control

  1. #11

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    Mar 2017
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    Frederick MD
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    Default Re: Fuel Burn and Mixture Control

    Absolute EGT numbers donít mean anything! EGT numbers are a function of how far from the exhaust port the probe(s) are installed. The closer they are the higher the indication. There is no standard. If you have a multi probe system the only thing that matters is that they are all the same distance.


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  2. #12
    JPerkins's Avatar
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    Aug 2014
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    Cordova, Alaska
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    Default Re: Fuel Burn and Mixture Control

    What dga said. Two relatively easy ways to look for an induction leak; blue stains from fuel pooling, and tapping a leaf blower to the carb heat to positively pressurize the induction system then spray it with soapy water.

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    Jason Perkins

  3. #13
    proav's Avatar
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    Dec 2016
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    Ozark, Missouri
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    Default Re: Fuel Burn and Mixture Control

    I've been reading the same thing concerning EGT values.
    I would like to get the fuel burn down to less than 10gph. I used to own a 1970 C172 with s O-320 E2D and I flight planned 9gph but would usually actually see about 8.7gph if I remember correctly. I was hoping for the same with this one.
    Bert Rodgers
    N20PP PA22/20-150

  4. #14
    Administrator Steve Pierce's Avatar
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    Nov 2007
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    Graham, Texas, United States
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    Default Re: Fuel Burn and Mixture Control

    What pitch is your prop? I know the 56" used a lot of fuel, 58" was better on fuel. I always showed between 8.5-9 gph with my 150 hp Pacer running 24-2450 rpm.

  5. #15
    proav's Avatar
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    Dec 2016
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    Default Re: Fuel Burn and Mixture Control

    I'm not sure about the pitch. I'll dig into the logs and see what it is.
    Bert Rodgers
    N20PP PA22/20-150

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