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Erratic Loss of 200rpm On Climb Out

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27 Jul 2018 16:00 #1596 by Denis Jacques
Replied by Denis Jacques on topic Erratic Loss of 200rpm On Climb Out
Hello, thank you for the replies. It was on a moderate climb with high weight.

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25 Jul 2018 10:01 #1595 by Dean Weichmann
Replied by Dean Weichmann on topic Erratic Loss of 200rpm On Climb Out
Denis, did the problem occur in steep climb or in a more shallow climb?

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24 Jul 2018 22:42 #1593 by Ronald Raty
Replied by Ronald Raty on topic Erratic Loss of 200rpm On Climb Out
Here is an interesting story from an AOPA safety brief:
On a mid-June morning in western North Carolina, a flight instructor and the owner of a Cessna 182 ventured out for a training flight . A weather station reported visual meteorological conditions (VMC ) with a temperature of 80° F and a dew
point of 45 °F. The relative humidity was 28 percent. Shortly after departure the engine lost power , and the pilot attempt ed to stretch a power-off glide to a nearby grass strip. The airplane impacted tree branches before it stalled,
and subsequently impacted the runway environment. The NTSB determined one of the probable causes of the accident to be carb icing that led to a loss of engine power.

Carb icing can occur at almost any temperature and humidity.

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22 Jul 2018 20:44 #1590 by Gordie Meade
Replied by Gordie Meade on topic Erratic Loss of 200rpm On Climb Out
I also live in Florida and have run into carb ice. The symptoms are the same but I have never heard of carb ice with the ambient temp above 70 degrees. Mine occurred at 2500 feet and eight miles from the airport. I immediately turned toward the airport and pulled on the carb heat. In 45 seconds, the roughness went away and I went back to normal (carb heat on) rpm.
A Suggestion: Fly later in the day when the temp is in the 90s. My airplane would still climb with the carb ice but it IS scary.

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21 Jul 2018 09:30 #1588 by Denis Jacques
Erratic Loss of 200rpm On Climb Out was created by Denis Jacques
Hello, my '69 has been losing around 200rpm and running rough after I get to 500' during climb out. It did it two flight ago, ran perfect last flight, then did it agin this morning. The header fuel cap vent is fully open and air filter is good. What could be causing this issue? I live in Florida and this morning it was 81F and 90% humidity. Could carb ice be a possibility? Any input will be greatly appreciated as I will not be flying the airplane again until the issue is diagnosed and fixed. Thank you so much.

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