KitLog pro

Powered By Kitlog Pro v2.0

Peters Web Site
' style=
Date:  8-15-2023
Number of Hours:  3.00
Manual Reference:  
Brief Description:  Fuel Pressure Sensor.

I noticed the fuel pressure gauge indications were different between the first and second engine runs.
The indication were still in normal range, however they were different.
When JAC did his engine run I removed the silicone seal in the fuel sensor connection and fuel pressure was stable.
I then reinstalled the seal and there was no fuel pressure indication, so I removed the seal again and normal fuel pressure was once again indicated.
BDH has done a lot of research on this issue and discovered there is a known problem with this sensor.
The reason for different indication between the engine runs is because of different barometric pressures on the days of the engine runs.
The sensor needs ambient barometric pressure and the silicone seal was not allowing internal and external pressure to equalise in the connector.
When JAC did his engine run without the silicone seal, the pressure in the connection was equal to the barometric pressure of the day.
When I reinstalled the silicone seal, the action of pushing the connector together is pressurising the connection and that is where the pressure sensor is situated.
The silicone seal keeps dirt and moisture out and adds stability to the connection, so it is required.
The fix is to drill a small hole in the base of the connection to allow ambient pressure both in and out.
This has solved my differing fuel pressure indication.
I have not run the engine yet, however the fuel pressure indication is good by just running the fuel pump.
' style=

2mm hole drilled.

2mm hole drilled.

' style=

2mm hole drilled.

2mm hole drilled.

' style=

Connector with equalisation hole.

Connector with equalisation hole.

' style=










Copyright © 2001-2024 Matronics. All Rights Reserved.