Frogman208
Active Member
Hey guys,
Just replaced my Dynon transducers with the updated Kavlico models, so I've been watching fuel/oil pressures. I've got the standard Bendix RSA-5 setup on my IO-360 A1A. I've updated the Dynon engine maps and put a couple flights under my belt with all pressures looking good while in flight. However, this is the first time I shut the engine down but kept one of the Dynon screens on for about 30 seconds and I watched the fuel pressure slowly climb to around 50psi. If I push in the mixture from ICO it drops to zero and slowly rises again. Since I put all my flights on SavvyAnalysis I went back to check on flights prior to changing out the tranducers. I was able to catch some flights that showed this same trend for a few seconds before the Dynon EFIS shut down. My "***"umption is this is normal due to heat soaked engine increases vapor pressure in the lines. Keep in mind, engine is completely shut down, no pumps operating (mechanical or electrical). I hear the usual vaporization in the lines under the cowling when I open my oil door but that much pressure reading off the transducer? Thoughts? Normal? Abnormal? Can it blow the diaphram on the mechanical fuel pump?
Just replaced my Dynon transducers with the updated Kavlico models, so I've been watching fuel/oil pressures. I've got the standard Bendix RSA-5 setup on my IO-360 A1A. I've updated the Dynon engine maps and put a couple flights under my belt with all pressures looking good while in flight. However, this is the first time I shut the engine down but kept one of the Dynon screens on for about 30 seconds and I watched the fuel pressure slowly climb to around 50psi. If I push in the mixture from ICO it drops to zero and slowly rises again. Since I put all my flights on SavvyAnalysis I went back to check on flights prior to changing out the tranducers. I was able to catch some flights that showed this same trend for a few seconds before the Dynon EFIS shut down. My "***"umption is this is normal due to heat soaked engine increases vapor pressure in the lines. Keep in mind, engine is completely shut down, no pumps operating (mechanical or electrical). I hear the usual vaporization in the lines under the cowling when I open my oil door but that much pressure reading off the transducer? Thoughts? Normal? Abnormal? Can it blow the diaphram on the mechanical fuel pump?