Mockingbird
I'm New Here
I have an RV-6a with a Lycoming O-360 A1A
When I'm accelerating for takeoff it backfires and runs rough.
Also it fouls the plugs if I don't lean out aggressively on the previous flight. These things are telling me its running rich. The mechanic put on a new carburetor and replaced the intake gasket.
The fuel pressure is 13psi with the engine running. The fuel pressure is 7psi with the engine off and the electric fuel pump on. The engine manual says fuel pressure should be 3psi with minimum pressure of 0.5 and Max 8psi.
Would you guys say the fuel pump should be replaced? I'm pretty sure its a diaphragm pump and I don't think there's a fuel pressure regulator to adjust. Am I right?
When I'm accelerating for takeoff it backfires and runs rough.
Also it fouls the plugs if I don't lean out aggressively on the previous flight. These things are telling me its running rich. The mechanic put on a new carburetor and replaced the intake gasket.
The fuel pressure is 13psi with the engine running. The fuel pressure is 7psi with the engine off and the electric fuel pump on. The engine manual says fuel pressure should be 3psi with minimum pressure of 0.5 and Max 8psi.
Would you guys say the fuel pump should be replaced? I'm pretty sure its a diaphragm pump and I don't think there's a fuel pressure regulator to adjust. Am I right?