[Steve]

My friend has an injected O-320 in his 9A. He had low fuel pressure and much air the lines due to loose fuel line fittings at the tanks. He tightened every fitting in the fuel systems and all was well for the last 2 years. However it seems the problem may be returning as he felt a bit of roughness on a recent flight. I mentioned he should closely inspect all the flares on the fuel lines. Perhaps replace the lines with the Bonaco braided product.