My RV-9A is finished, and I'm currently doing ground tests. It has an O320-E2D installed. There's a problem with the carburetor air temperature sensor 100468-000, ¼-28 UNF, -50° to 150°F.
The display in Skyview is set in °C. When the engine is cold, the carburetor air is displayed identically to the OAT, cylinder head temperatures, etc. Today it was 25°C (77°F). When I start the engine, the carburetor air temperature rises. While taxiing on the ground for a longer period, with several rpm changes, I reached up to 80°C (176°F). That's not normal, is it? Shouldn't the carburetor air temperature drop due to the Venturi effect? Or does the cooling only start during flight? What are your carburetor air temperatures? I'm grateful for any advice.
Greetings from Germany, Knut
The display in Skyview is set in °C. When the engine is cold, the carburetor air is displayed identically to the OAT, cylinder head temperatures, etc. Today it was 25°C (77°F). When I start the engine, the carburetor air temperature rises. While taxiing on the ground for a longer period, with several rpm changes, I reached up to 80°C (176°F). That's not normal, is it? Shouldn't the carburetor air temperature drop due to the Venturi effect? Or does the cooling only start during flight? What are your carburetor air temperatures? I'm grateful for any advice.
Greetings from Germany, Knut
. Suggest you remove the probe & if fuel runs out you have it mounted too low .