First engine start - 13 PSI fuel pressure

[mikehoover]

Not sure if I need to set something in the Skyview EMS or not, but I was getting 13 PSI fuel pressure the whole time, with or without the booster pump. It is a carbureted O-320. Any idea why the fuel pressure is so high? The engine ran great.

 

[rlallen1]

recently ran my engine for the first time..IO 360, fuel pressure ran at 29. boost off.

 

[mmarien]

The IO (fuel injection) will have a lot higher pressure then O (carburetor). I had 1 - 5 PSI on my O320 before I upgraded. There are no setting on Skyview other then the choice of pressure sensor. Do you have the correct sensor selected? There also is a new sensor file download since the new Kavlico sensors.

 

[rlallen1]

I do not have the kavlico sensors..guess I need to check this too..what is average f/p for an injected I wonder?

 

[mmarien]

Not sure for standard IO. My efii system needs 35 PSI without the engine running and is 32-34 at cruise.

 

[mikehoover]

Thanks for the replies. I did solve the issue by going in to SETUP MENU>EMS SETUP>Sensor Input Mapping and selected the 1-150 PSI FLUID PRESSURE (100411-000) for the OIL PRESSURE function. The default was the 100411-001 sensor that is of a higher pressure range 0-80 PSI. The sensor I have installed for my Lycoming O-320 is the 100411-000 for 0-30 PSI. If the sensor ranges are linear from one to the other then perhaps the ratio of the high ranges of the two sensors times my high reading of 13 PSI would yield what I should expect: 30/80 x 13 = 4.875 PSI. Indeed the sensor now shows between  4 and 5 PSI.