Doug Rohrer
Well Known Member
I bought a flying RV-9A about a year ago, and have flown it 80 fun-filled hours since then. It has a Lycoming O-320 engine. During this time, I have seen the fuel pressure on the Van's gage creep up to around 10 psi when running on the mechanical fuel pump. The gage has a red mark at 8 psi. The electric boost pump goes up to 8 psi with the engine off. These pressures all seem too high, but I don't know what the prefered range is. What is the desire range, and how is the pressure adjusted? Thanks.
Doug
Doug